{"id":471,"date":"2021-09-06T06:27:55","date_gmt":"2021-09-06T06:27:55","guid":{"rendered":"https:\/\/www.siekmann-rohrbogen.de\/ohyb-trubky-z-bezesve-trubky\/"},"modified":"2025-12-03T07:54:52","modified_gmt":"2025-12-03T07:54:52","slug":"ohyb-trubky-z-bezesve-trubky","status":"publish","type":"page","link":"https:\/\/www.siekmann-rohrbogen.de\/cs\/","title":{"rendered":"Ohyb trubky z beze\u0161v\u00e9 trubky"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull is-light has-parallax has-custom-content-position is-position-bottom-right\" style=\"min-height:860px;aspect-ratio:unset;\"><div role=\"img\" aria-label=\"Rohrbogen beim Hamburger Verfahren\" class=\"wp-block-cover__image-background wp-image-46 has-parallax\" style=\"background-position:50% 50%;background-image:url(https:\/\/siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160418-IMG_1204.jpg)\"><\/div><span aria-hidden=\"true\" class=\"wp-block-cover__background has-black-background-color has-background-dim-20 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p><\/p>\n\n\n\n<p class=\"has-text-align-right has-large-font-size\">SIEKMANN Rohrbogen<br\/>speci\u00e1ln\u00ed. v\u00fdroba. kolen.<\/p>\n<\/div><\/div>\n\n<h1 class=\"wp-block-heading\">Kolena p\u0159\u00edmo od v\u00fdrobce \u2013 Siekmann<\/h1>\n\n<p><strong>Siekmann GmbH &amp; Co. KG je ji\u017e des\u00edtky let va\u0161\u00edm spolehliv\u00fdm partnerem pro bezesov\u00e1 kolena \u2013 vyr\u00e1b\u011bn\u00e1 v N\u011bmecku. Zpracov\u00e1v\u00e1me ocel a nerezovou ocel a specializujeme se na v\u00fdrobu silnost\u011bnn\u00fdch sva\u0159ovac\u00edch kolen a speci\u00e1ln\u00edch kolen.<\/strong><\/p>\n\n<p>Na\u0161\u00ed silnou str\u00e1nkou je p\u0159esn\u00e9 tv\u00e1\u0159en\u00ed, a to i p\u0159i mal\u00fdch s\u00e9ri\u00edch a kr\u00e1tk\u00fdch dodac\u00edch lh\u016ft\u00e1ch. Jako v\u00fdrobce udr\u017eujeme mal\u00fd sklad polotovar\u016f, d\u00edky \u010demu\u017e m\u016f\u017eeme rychle dodat i jednotliv\u00e9 kusy.&#13;\n<\/p>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<h4 class=\"wp-block-heading\">P\u0159ehled na\u0161eho dodavatelsk\u00e9ho programu:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bezesov\u00e1 kolena s velk\u00fdmi tlou\u0161\u0165kami st\u011bny<\/li>\n\n\n\n<li>Speci\u00e1ln\u00ed polom\u011bry ohybu a kolena s prodlou\u017een\u00fdmi p\u0159\u00edmo\u010dar\u00fdmi konci<\/li>\n\n\n\n<li>Ocel, vysoce legovan\u00e9 materi\u00e1ly a nerezov\u00e1 ocel<\/li>\n\n\n\n<li><strong>Kolena 45\u00b0, 90\u00b0 a 180\u00b0<\/strong> \u2013 mo\u017en\u00e9 jsou i mezilehl\u00e9 rozm\u011bry<\/li>\n\n\n\n<li><strong>Kolena typu B<\/strong> podle EN 10253-2, EN 10253-4 nebo DIN 2605 \u010d\u00e1st 2 s pln\u00fdm stupn\u011bm vyu\u017eit\u00ed materi\u00e1lu<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/K1600_IMG_7675-1024x683.jpg\" alt=\"Kolena\" class=\"wp-image-671\" srcset=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/K1600_IMG_7675-1024x683.jpg 1024w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/K1600_IMG_7675-300x200.jpg 300w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/K1600_IMG_7675-768x512.jpg 768w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/K1600_IMG_7675-1536x1024.jpg 1536w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/K1600_IMG_7675.jpg 1800w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n<\/div>\n<\/div>\n\n<p>Na\u0161e kolena se pou\u017e\u00edvaj\u00ed po cel\u00e9m sv\u011bt\u011b v nejr\u016fzn\u011bj\u0161\u00edch odv\u011btv\u00edch \u2013 nap\u0159. v rafineri\u00edch, elektr\u00e1rn\u00e1ch, vysoce \u00fa\u010dinn\u00fdch plynov\u00fdch elektr\u00e1rn\u00e1ch, na ropn\u00fdch plo\u0161in\u00e1ch, ve v\u00fdm\u011bn\u00edc\u00edch tepla, ve stroj\u00edrenstv\u00ed a v mnoha dal\u0161\u00edch pr\u016fmyslov\u00fdch aplikac\u00edch.<\/p>\n\n<div class=\"inherit-container-width wp-block-group alignfull has-pale-cyan-blue-background-color has-background is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group__inner-container\">\n<p>Pokud chcete zakoupit kolena, nev\u00e1hejte n\u00e1s kontaktovat. R\u00e1di v\u00e1m pom\u016f\u017eeme.&#13;\n<\/p>\n\n\n\n<div class=\"wp-block-buttons has-custom-font-size has-medium-font-size is-horizontal is-content-justification-left is-layout-flex wp-container-core-buttons-is-layout-67cdd4f0 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-fill\"><a class=\"wp-block-button__link has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/www.siekmann-rohrbogen.de\/cs\/kontakt\/\" style=\"border-style:none;border-width:0px;border-radius:10px\">Na na\u0161\u00ed kontaktn\u00ed str\u00e1nce<\/a><\/div>\n<\/div>\n\n\n\n<p>najdete tak\u00e9 formul\u00e1\u0159, pomoc\u00ed kter\u00e9ho m\u016f\u017eete p\u0159\u00edmo poptat kolena.<\/p>\n<\/div><\/div>\n\n<h2 class=\"wp-block-heading\">Dodavatelsk\u00fd program kolen podle EN 10253, DIN 2605 nebo ASME B16.9:<\/h2>\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Vn\u011bj\u0161\u00ed pr\u016fm\u011br:<\/td><td>14,0 mm \u2013 219,1 mm<\/td><\/tr><tr><td>Tlou\u0161\u0165ka st\u011bny:<\/td><td>1 mm a\u017e 55 mm, podle vn\u011bj\u0161\u00edho pr\u016fm\u011bru<\/td><\/tr><tr><td>\u00dahel:<\/td><td>15\u00b0, 30\u00b0, 45\u00b0, 90\u00b0, 180\u00b0 a mezilehl\u00e9 hodnoty podle rozm\u011bru<\/td><\/tr><tr><td>Typ konstrukce:<\/td><td>Proveden\u00ed 2D, 3D, 5D, long radius (LR), short radius (SR) \u2013 dal\u0161\u00ed polom\u011bry ohybu najdete v \u010d\u00e1sti Polom\u011bry ohybu.&#13;\n<\/td><\/tr><tr><td>Normy:<\/td><td>EN10253 typ A a B, DIN 2605 \u010d\u00e1st 1 a 2, ASME B16.9, v\u00fdroba podle specifikac\u00ed z\u00e1kazn\u00edka,&#13;\n<\/td><\/tr><tr><td>Tolerance:<\/td><td>Obecn\u011b vyr\u00e1b\u00edme podle b\u011b\u017en\u00fdch toleranc\u00ed uveden\u00fdch v norm\u00e1ch pro kolena. \u010casto v\u0161ak vyr\u00e1b\u00edme i kolena s u\u017e\u0161\u00edmi tolerancemi. V takov\u00fdch p\u0159\u00edpadech m\u00e1me mo\u017enost nap\u0159\u00edklad vyrobit koleno s polom\u011brem ohybu v toleranci \u00b11 mm.&#13;\n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<p>Dod\u00e1v\u00e1me bezesov\u00e1 kolena vyroben\u00e1 z uhl\u00edkov\u00e9 oceli, vysoce legovan\u00e9 oceli nebo nerezov\u00e9 oceli. D\u00edky na\u0161im rozs\u00e1hl\u00fdm zku\u0161enostem v oblasti tepeln\u00e9ho zpracov\u00e1n\u00ed jsme nav\u00edc schopni tv\u00e1\u0159et \u0161irokou \u0161k\u00e1lu materi\u00e1l\u016f. Mimochodem, seznam pou\u017e\u00edvan\u00fdch materi\u00e1l\u016f najdete v \u010d\u00e1sti Materi\u00e1ly.&#13;\n<\/p>\n\n<p>Na\u0161e v\u00fdroba podl\u00e9h\u00e1 p\u0159\u00edsn\u00fdm kontrol\u00e1m kvality. B\u011bhem cel\u00e9ho v\u00fdrobn\u00edho procesu prob\u00edhaj\u00ed pr\u016fb\u011b\u017en\u00e9 rozm\u011brov\u00e9 kontroly, d\u00edky nim\u017e m\u016f\u017eeme p\u0159\u00edpadn\u00e9 chyby odhalit v\u010das. Spole\u010dnost Siekmann je kontrolov\u00e1na organizac\u00ed T\u00dcV Nord a je certifikov\u00e1na podle ISO 9001:2015. To n\u00e1m umo\u017e\u0148uje trvale zaji\u0161\u0165ovat neust\u00e1l\u00e9 zlep\u0161ov\u00e1n\u00ed na\u0161ich proces\u016f.&#13;\n<\/p>\n\n<div class=\"inherit-container-width wp-block-group alignfull has-very-light-gray-to-cyan-bluish-gray-gradient-background has-background is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group__inner-container\">\n<h2 class=\"wp-block-heading\" id=\"werkstoffe\">Materi\u00e1ly pro kolena<\/h2>\n\n\n\n<p>V pr\u016fb\u011bhu let jsme z\u00edskali rozs\u00e1hl\u00e9 zku\u0161enosti v oblasti v\u00fdroby kolen. Uhl\u00edkov\u00e9 oceli, vysoce legovan\u00e9 oceli i nerezov\u00e9 oceli pat\u0159\u00ed mezi materi\u00e1ly, kter\u00e9 zpracov\u00e1v\u00e1me. N\u00ed\u017ee najdete seznam materi\u00e1l\u016f, ze kter\u00fdch m\u016f\u017eeme vyr\u00e1b\u011bt kolena:&#13;\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">EN \/ DIN()<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P235GHTC1\/2 (St 35.8 I\/ III), P265GH, S355J2H<\/li>\n\n\n\n<li>16Mo3 (15Mo3), 10CrMo9-10 (10CrMo910), 13CrMo4-5 (13CrMo44)<\/li>\n\n\n\n<li>X11CrMo5, X11CrMo9-1, X20CrMOV11-1, X10CrMoVNb9-1, X10CrWMoVNb9-2, 7CrMoVTiB10-10<\/li>\n\n\n\n<li>P215NL (TTST35N\/V), 12Ni14 (10Ni14)<\/li>\n\n\n\n<li>P355N (StE355), P355NH (WStE355), P355NL1 (TStE355), P355NL2<\/li>\n\n\n\n<li>L290NB (StE 290.7), L360NB (StE 360.7)<\/li>\n\n\n\n<li>1.4301, 1.4306, 1.4361, 1.4362 (Lean Duplex), 1.4401, 1.4404, 1.4410, 1.4435, 1.4436, 1.4439, 1.4462 (Duplex), 1.4466 (Super Duplex), 1.4501, 1.4539, 1.4541, 1.4547, 1.4550, 1.4571 1.4841, 1.4749, 1.4828, 1.4878, , 1.4876, 1.4952, 1.4835, 1.4877, 1.4910, 1.4922<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">ASME<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>WPA, WPB, WPC, WP1, WP5, WP9, WP11, WP12, WP22, WP32\/27, WP91, WP92, WP304, WP304 H, WP304L, WP310, WP316, WP316L, WP316TI, WP321, WP347, WP347H<\/li>\n\n\n\n<li>\u00a0WPL 3, WPL6, X42, X52, WPHY52, WPHY60<\/li>\n\n\n\n<li>S30815, S31000, S31050, S31500, S31726, S31803, S32760, N08904<\/li>\n\n\n\n<li>Alloy 800H, DMV310N<\/li>\n<\/ul>\n<\/div><\/div>\n\n<figure class=\"wp-block-gallery alignfull has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" data-id=\"55\" src=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20140508-IMG_0082-1024x683.jpg\" alt=\"Kolena se speci&#xE1;ln&#xED;m &#xFA;kosem\" class=\"wp-image-55\" srcset=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20140508-IMG_0082-1024x683.jpg 1024w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20140508-IMG_0082-300x200.jpg 300w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20140508-IMG_0082-768x512.jpg 768w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20140508-IMG_0082-1536x1024.jpg 1536w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20140508-IMG_0082.jpg 1800w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"684\" data-id=\"56\" src=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_00582-1024x684.jpg\" alt=\"silnost&#x11B;nn&#xE9; koleno\" class=\"wp-image-56\" srcset=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_00582-1024x684.jpg 1024w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_00582-300x200.jpg 300w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_00582-768x513.jpg 768w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_00582-1536x1026.jpg 1536w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_00582.jpg 1797w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"684\" data-id=\"57\" src=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_01042-1024x684.jpg\" alt=\"Koleno s mal&#xFD;m polom&#x11B;rem ohybu\" class=\"wp-image-57\" srcset=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_01042-1024x684.jpg 1024w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_01042-300x200.jpg 300w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_01042-768x513.jpg 768w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_01042-1536x1026.jpg 1536w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_20160315-IMG_01042.jpg 1797w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n\n<div class=\"wp-block-cover alignfull has-parallax\" style=\"min-height:694px;aspect-ratio:unset;\"><div class=\"wp-block-cover__image-background wp-image-26 has-parallax\" style=\"background-position:50% 50%;background-image:url(https:\/\/siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_IMG_7675-1024x683.jpg)\"><\/div><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-60 has-background-dim wp-block-cover__gradient-background has-background-gradient\" style=\"background:linear-gradient(135deg,rgb(19,147,252) 0%,rgb(171,202,255) 100%)\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<h2 class=\"wp-block-heading has-white-color has-text-color has-link-color wp-elements-a0e657f9fba19cee0ed190c931d283ef\" id=\"normen\">Jak\u00e9 normy plat\u00ed pro kolena?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading has-white-color has-text-color has-link-color wp-elements-2d8a2cfdf61ab6334bbe8d250f0db1a3\">EN 10253-2<\/h3>\n\n\n\n<p class=\"has-white-color has-text-color has-link-color wp-elements-62d7776ea7a0924a6874a18e1bb7dfda\">Toto je aktu\u00e1ln\u00ed norma pro tvarovky k nava\u0159ov\u00e1n\u00ed z nelegovan\u00fdch a legovan\u00fdch feritick\u00fdch ocel\u00ed se zvl\u00e1\u0161tn\u00edmi po\u017eadavky na zkou\u0161en\u00ed. V t\u00e9to norm\u011b byly slou\u010deny r\u016fzn\u00e9 n\u011bmeck\u00e9 DIN normy pro jednotliv\u00e9 typy tvarovek do jedn\u00e9 evropsk\u00e9 normy. Pro n\u00e1s je zde rozhoduj\u00edc\u00ed \u010d\u00e1st t\u00fdkaj\u00edc\u00ed se kolen. Dod\u00e1v\u00e1me proveden\u00ed 2D, 3D, 5D a tak\u00e9 mnoho speci\u00e1ln\u00edch polom\u011br\u016f mezi nimi.&#13;\n&#13;\nD\u00e1le norma EN 10253-2 obsahuje tak\u00e9 \u010d\u00e1st pro kolena s pln\u00fdm stupn\u011bm vyu\u017eit\u00ed materi\u00e1lu (typ B). Kolena \u201etyp B\u201c maj\u00ed na vnit\u0159n\u00ed stran\u011b oblouku v\u00fdrazn\u011b zes\u00edlenou tlou\u0161\u0165ku st\u011bny oproti tlou\u0161\u0165ce na konc\u00edch pro nava\u0159ov\u00e1n\u00ed, proto\u017ee vnit\u0159n\u00ed strana oblouku je nejv\u00edce nam\u00e1han\u00fdm m\u00edstem kolena. Norma rovn\u011b\u017e zahrnuje r\u016fzn\u00e9 voliteln\u00e9 po\u017eadavky, kter\u00e9 lze podle pot\u0159eby uv\u00e9st.&#13;\n&#13;\n<\/p>\n\n\n\n<p class=\"has-white-color has-text-color has-link-color wp-elements-71934e4519fd1af9c664edc1c25d194e\">Nap\u0159\u00edklad: **Volba 15 \u2013 Ka\u017ed\u00e1 tvarovka mus\u00ed b\u00fdt podrobena zkou\u0161ce tvrdosti.**<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-5-color has-text-color has-link-color wp-elements-c441b891657e85cce1e8cd25012b98de\">EN 10253-4<\/h3>\n\n\n\n<p class=\"has-white-color has-text-color has-link-color wp-elements-78b2d4efb6231b612dbf3eb29af582eb\">Tato norma se zab\u00fdv\u00e1 tvarovkami k nava\u0159ov\u00e1n\u00ed z austenitick\u00fdch a austeniticko-feritick\u00fdch (duplexn\u00edch) ocel\u00ed se zvl\u00e1\u0161tn\u00edmi po\u017eadavky na zkou\u0161en\u00ed. Z velk\u00e9 \u010d\u00e1sti odpov\u00edd\u00e1 norm\u011b EN 10253-2. V n\u011bkter\u00fdch p\u0159\u00edpadech v\u0161ak obsahuje odli\u0161n\u00e9 polom\u011bry ohybu oproti EN 10253-2. N\u00e1\u0161 t\u00fdm v\u00e1s m\u016f\u017ee o t\u011bchto rozd\u00edlech kdykoli podrobn\u011b informovat.&#13;\n&#13;\nMo\u017enosti uveden\u00e9 v EN 10253-2 jsou zahrnuty tak\u00e9 v EN 10253-4, av\u0161ak li\u0161\u00ed se v n\u011bkter\u00fdch z\u00e1sadn\u00edch bodech.&#13;\n<\/p>\n\n\n\n<p class=\"has-ast-global-color-5-color has-text-color has-link-color wp-elements-9ffaf3eca05c4cf2cc860c8ad670a61f\">Volba 15: Je nutn\u00e9 vystavit atest 3.2 podle EN 10204.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-white-color has-text-color has-link-color wp-elements-b45230ed5fa0d2c3de0fe82d60829856\">DIN 2605<\/h3>\n\n\n\n<p class=\"has-white-color has-text-color has-link-color wp-elements-3bcba4ba0377ae5e61c2bd2e8bba7a75\">DIN 2605 je star\u0161\u00ed norma pro kolena, kter\u00e1 byla nahrazena normou EN 10253. U kolen s pln\u00fdm stupn\u011bm vyu\u017eit\u00ed materi\u00e1lu zde plat\u00ed jin\u00e9 tlou\u0161\u0165ky st\u011bn ne\u017e v nov\u00fdch norm\u00e1ch. Tato norma tak\u00e9 nen\u00ed tak rozs\u00e1hl\u00e1 jako EN 10253 a obsahuje pouze \u010d\u00e1st t\u00fdkaj\u00edc\u00ed se kolen, nikoli jin\u00fdch tvarovek.&#13;\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-white-color has-text-color has-link-color wp-elements-e4b93c84f8d3a753ff851b34b0ec7010\">ASME B16.9<\/h3>\n\n\n\n<p class=\"has-white-color has-text-color has-link-color wp-elements-89beaf4ff93a14724d00758d904177a3\">Norma ASME B16.9 stanovuje technick\u00e9 po\u017eadavky pro bezesov\u00e9 a sva\u0159ovan\u00e9 ocelov\u00e9 tvarovky, mezi kter\u00e9 pat\u0159\u00ed i r\u016fzn\u00e9 typy kolen. Rozm\u011bry jsou uv\u00e1d\u011bny v palc\u00edch (vn\u011bj\u0161\u00ed pr\u016fm\u011br) a v \u0159ad\u00e1ch Schedule (tlou\u0161\u0165ky st\u011bn). Kolena podle t\u00e9to normy se pou\u017e\u00edvaj\u00ed po cel\u00e9m sv\u011bt\u011b ve v\u00fdstavb\u011b za\u0159\u00edzen\u00ed, potrubn\u00edch syst\u00e9mech a pr\u016fmyslov\u00fdch projektech a zaru\u010duj\u00ed vysokou kompatibilitu a normovou jistotu.<\/p>\n<\/div><\/div>\n\n<h2 class=\"wp-block-heading\">Co je koleno?<\/h2>\n\n<figure class=\"wp-block-image alignleft size-large is-resized is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_Rohrbogen_01.jpg\" alt=\"Koleno 180&#xB0;\" class=\"wp-image-27\" srcset=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_Rohrbogen_01.jpg 800w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_Rohrbogen_01-300x200.jpg 300w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_Rohrbogen_01-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n<p>Koleno je tvarovka, kter\u00e1 slou\u017e\u00ed ke zm\u011bn\u011b sm\u011bru potrubn\u00edho veden\u00ed. Existuj\u00ed r\u016fzn\u00e9 typy kolen, kter\u00e9 se mohou li\u0161it vn\u011bj\u0161\u00edm pr\u016fm\u011brem, tlou\u0161\u0165kou st\u011bny, polom\u011brem ohybu, \u00fahlem a materi\u00e1lem. Obvykle se vyr\u00e1b\u011bj\u00ed bu\u010f ze sva\u0159ovan\u00fdch polovin, nebo z bezesov\u00e9 trubky. Kolena se pou\u017e\u00edvaj\u00ed v mnoha oblastech, jako je energetika, stroj\u00edrenstv\u00ed, v\u00fdm\u011bn\u00edkov\u00e9 syst\u00e9my a v\u00fdstavba pr\u016fmyslov\u00fdch za\u0159\u00edzen\u00ed.&#13;\n<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"TypATypB\">Rozd\u00edl mezi koleny typu A a typu B<\/h2>\n\n<h3 class=\"wp-block-heading\">Koleno typu A \u2013 sn\u00ed\u017een\u00fd stupe\u0148 vyu\u017eit\u00ed materi\u00e1lu:<\/h3>\n\n<p>Tvarovky maj\u00ed stejnou tlou\u0161\u0165ku st\u011bny na sva\u0159ovac\u00edch konc\u00edch jako na t\u011ble kolena. Pevnost kolena v\u016f\u010di vnit\u0159n\u00edmu tlaku je ni\u017e\u0161\u00ed ne\u017e u trubky se stejn\u00fdm vn\u011bj\u0161\u00edm pr\u016fm\u011brem, stejnou tlou\u0161\u0165kou st\u011bny a ze stejn\u00e9ho materi\u00e1lu. Z tohoto d\u016fvodu se jedn\u00e1 o kolena se sn\u00ed\u017een\u00fdm stupn\u011bm vyu\u017eit\u00ed materi\u00e1lu. Tlou\u0161\u0165ka st\u011bny na cel\u00e9m t\u011ble tvarovky, stejn\u011b jako na p\u0159ipojovac\u00edch konc\u00edch, mus\u00ed dodr\u017eet minim\u00e1ln\u00ed tlou\u0161\u0165ku st\u011bny \u221212,5 % oproti jmenovit\u00e9 tlou\u0161\u0165ce.&#13;\n<\/p>\n\n<h3 class=\"wp-block-heading\">Koleno typu B \u2013 pln\u00fd stupe\u0148 vyu\u017eit\u00ed materi\u00e1lu:<\/h3>\n\n<p>Tvarovky maj\u00ed na vnit\u0159n\u00ed stran\u011b oblouku zv\u00fd\u0161enou tlou\u0161\u0165ku st\u011bny. Pevnost v\u016f\u010di vnit\u0159n\u00edmu tlaku odpov\u00edd\u00e1 pevnosti trubky se stejn\u00fdm vn\u011bj\u0161\u00edm pr\u016fm\u011brem, stejnou tlou\u0161\u0165kou st\u011bny a ze stejn\u00e9ho materi\u00e1lu. Z tohoto d\u016fvodu se jedn\u00e1 o kolena s pln\u00fdm stupn\u011bm vyu\u017eit\u00ed materi\u00e1lu.&#13;\n&#13;\nTlou\u0161\u0165ka st\u011bny na vnit\u0159n\u00ed stran\u011b kolena mus\u00ed b\u00fdt zv\u00fd\u0161ena oproti tlou\u0161\u0165ce st\u011bny na p\u0159ipojovac\u00edch konc\u00edch. Po\u017eadovan\u00e1 tlou\u0161\u0165ka st\u011bny se vypo\u010d\u00edt\u00e1v\u00e1 pomoc\u00ed slo\u017eit\u00e9ho vzorce, kter\u00fd zohled\u0148uje vn\u011bj\u0161\u00ed pr\u016fm\u011br, tlou\u0161\u0165ku st\u011bny a zejm\u00e9na polom\u011br ohybu. To znamen\u00e1, \u017ee kolena s velmi mal\u00fdmi polom\u011bry ohybu mus\u00ed m\u00edt na vnit\u0159n\u00ed stran\u011b v\u00fdrazn\u011b zv\u00fd\u0161enou tlou\u0161\u0165ku st\u011bny.&#13;\n<\/p>\n\n<h3 class=\"wp-block-heading\">Rozd\u00edl podle norem EN 10253-2 a EN 10253-4<\/h3>\n\n<p>Normy EN 10253-2 a EN 10253-4 rozd\u011bluj\u00ed kolena do dvou typ\u016f, p\u0159i\u010dem\u017e v aktu\u00e1ln\u00edch vyd\u00e1n\u00edch pou\u017e\u00edvaj\u00ed odli\u0161n\u00e9 ozna\u010den\u00ed. V EN 10253-2 jsou ozna\u010dena jako typ A a typ B, zat\u00edmco EN 10253-4 je ozna\u010duje jako proveden\u00ed A a proveden\u00ed B.&#13;\n<\/p>\n\n<div class=\"wp-block-cover alignfull is-light\" style=\"min-height:576px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1831\" height=\"1104\" class=\"wp-block-cover__image-background wp-image-656\" alt=\"Rohrbogen Typ B\" src=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/TYPA_B-1.jpg\" style=\"object-position:61% 21%\" data-object-fit=\"cover\" data-object-position=\"61% 21%\" srcset=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/TYPA_B-1.jpg 1831w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/TYPA_B-1-300x181.jpg 300w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/TYPA_B-1-1024x617.jpg 1024w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/TYPA_B-1-768x463.jpg 768w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/09\/TYPA_B-1-1536x926.jpg 1536w\" sizes=\"auto, (max-width: 1831px) 100vw, 1831px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-ast-global-color-6-background-color has-background-dim-30 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-ast-global-color-1-color has-text-color\">Koleno 76,1 \u00d7 12,5 \u2013 2D, polom\u011br ohybu 126<\/p>\n\n\n\n<p class=\"has-ast-global-color-1-color has-text-color\"><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-ast-global-color-1-color has-text-color\"><strong>Typ A, tlou\u0161\u0165ka st\u011bny uvnit\u0159: 11,0 mm<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-ast-global-color-1-color has-text-color\"><strong>Typ B, tlou\u0161\u0165ka st\u011bny uvnit\u0159: 16,8 mm<\/strong><\/p>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><\/p>\n<\/div><\/div>\n\n<style>@media (max-width:480px){#cp_calculatedfieldsf_pform_1{min-height:10017px;}}@media (max-width:768px){#cp_calculatedfieldsf_pform_1{min-height:820px;}}@media (max-width:1024px){#cp_calculatedfieldsf_pform_1{min-height:962px;}}@media (min-width:1024px){#cp_calculatedfieldsf_pform_1{min-height:1121px;}}<\/style><form name=\"cp_calculatedfieldsf_pform_1\" id=\"cp_calculatedfieldsf_pform_1\" action=\"https:\/\/www.siekmann-rohrbogen.de\/cs\/\" method=\"post\" enctype=\"multipart\/form-data\" onsubmit=\"return fbuilderjQuery.fbuilder.doValidate(this);\" class=\"cff-form no-prefetch  cff-form-7 cp_cff_clean\"  data-nonce=\"007b327180\">\n<input type=\"hidden\" name=\"cp_calculatedfieldsf_pform_psequence\" value=\"_1\" \/>\n<input type=\"hidden\" name=\"cp_calculatedfieldsf_id\" value=\"7\" \/>\n<input type=\"hidden\" name=\"cp_ref_page\" value=\"https:\/\/www.siekmann-rohrbogen.de\/cs\" \/>\n<pre style=\"display:none !important;\"><script data-category=\"functional\" type=\"text\/javascript\">form_structure_1=[[{\"form_identifier\":\"\",\"name\":\"fieldname3\",\"shortlabel\":\"DM\",\"index\":0,\"ftype\":\"fnumber\",\"userhelp\":\"\",\"userhelpTooltip\":false,\"tooltipIcon\":false,\"csslayout\":\"\",\"title\":\"Au\\u00dfendurchmesser in 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Dieser ist rein indikativ und ersetzt keine Berechnung.\",\"fBuild\":{},\"parent\":\"\"},{\"dependencies\":[{\"rule\":\"\",\"complex\":false,\"fields\":[\"\"]}],\"form_identifier\":\"\",\"name\":\"fieldname1\",\"shortlabel\":\"\",\"index\":4,\"ftype\":\"fCalculated\",\"userhelp\":\"\",\"userhelpTooltip\":false,\"tooltipIcon\":false,\"csslayout\":\"\",\"title\":\"D\\\/2*Tmin\",\"predefined\":\"\",\"required\":false,\"exclude\":false,\"size\":\"small\",\"eq\":\"fieldname3\\\/(2*fieldname2*0.875)\",\"suffix\":\"\",\"prefix\":\"\",\"decimalsymbol\":\".\",\"groupingsymbol\":\"\",\"readonly\":true,\"currency\":false,\"noEvalIfManual\":true,\"formatDynamically\":false,\"hidefield\":true,\"fBuild\":{},\"parent\":\"\"},{\"dependencies\":[{\"rule\":\"\",\"complex\":false,\"fields\":[\"\"]}],\"form_identifier\":\"\",\"name\":\"fieldname7\",\"shortlabel\":\"\",\"index\":5,\"ftype\":\"fCalculated\",\"userhelp\":\"\",\"userhelpTooltip\":false,\"tooltipIcon\":false,\"csslayout\":\"\",\"title\":\"R\\\/Tmin^2\",\"predefined\":\"\",\"required\":false,\"exclude\":false,\"size\":\"medium\",\"eq\":\"(fieldname6\\\/fieldname2\\\/0.875)*(fieldname6\\\/fieldname2\\\/0.875)\",\"suffix\":\"\",\"prefix\":\"\",\"decimalsymbol\":\".\",\"groupingsymbol\":\"\",\"readonly\":true,\"currency\":false,\"noEvalIfManual\":true,\"formatDynamically\":false,\"hidefield\":true,\"fBuild\":{},\"parent\":\"\"},{\"dependencies\":[{\"rule\":\"\",\"complex\":false,\"fields\":[\"\"]}],\"form_identifier\":\"\",\"name\":\"fieldname8\",\"shortlabel\":\"\",\"index\":6,\"ftype\":\"fCalculated\",\"userhelp\":\"\",\"userhelpTooltip\":false,\"tooltipIcon\":false,\"csslayout\":\"\",\"title\":\"r\\\/tmin\",\"predefined\":\"\",\"required\":false,\"exclude\":false,\"size\":\"medium\",\"eq\":\"SQRT(0.5*(POW(fieldname1,2)+fieldname7)+ SQRT(0.25*POW(POW(fieldname1,2)+fieldname7,2)-fieldname1*(fieldname1-1)*fieldname7))\",\"suffix\":\"\",\"prefix\":\"\",\"decimalsymbol\":\".\",\"groupingsymbol\":\"\",\"readonly\":true,\"currency\":false,\"noEvalIfManual\":true,\"formatDynamically\":false,\"hidefield\":true,\"fBuild\":{},\"parent\":\"\"},{\"dependencies\":[{\"rule\":\"\",\"complex\":false,\"fields\":[\"\"]}],\"form_identifier\":\"\",\"name\":\"fieldname9\",\"shortlabel\":\"\",\"index\":7,\"ftype\":\"fCalculated\",\"userhelp\":\"\",\"userhelpTooltip\":false,\"tooltipIcon\":false,\"csslayout\":\"\",\"title\":\"Mindestwand an der \\u0022Typ B\\u0022 Rohrbogeninnenseite: tint,min\",\"predefined\":\"\",\"required\":false,\"exclude\":false,\"size\":\"small\",\"eq\":\"CEIL(PREC(0.875*fieldname2*(fieldname1+fieldname8-(fieldname1+fieldname8-1)*SQRT((POW(fieldname8,2)-POW(fieldname1,2))\\\/(POW(fieldname8,2)-fieldname1*(fieldname1-1)))),2 )*10)\\\/10\",\"suffix\":\"mm\",\"prefix\":\"\",\"decimalsymbol\":\",\",\"groupingsymbol\":\".\",\"readonly\":true,\"currency\":false,\"noEvalIfManual\":true,\"formatDynamically\":false,\"hidefield\":false,\"fBuild\":{},\"parent\":\"\"}],{\"0\":{\"title\":\"Typ B\",\"description\":\"Hier k\\u00f6nnen Sie die ben\\u00f6tigte Mindeswanddicke f\\u00fcr einen Typ B Rohrbogen berechnen. Geben Sie daf\\u00fcr in die unteren Felder Nennwand, Biegeradius und Au\\u00dfendurchmesser an. Die Mindestwand tint,min wird dann berechnet. Die Werte sind rein informativ.\",\"formlayout\":\"top_aligned\",\"formtemplate\":\"cp_cff_clean\",\"evalequations\":1,\"evalequationsevent\":2,\"loading_animation\":1,\"autocomplete\":1,\"persistence\":0,\"customstyles\":\"\"},\"formid\":\"cp_calculatedfieldsf_pform_1\"}];<\/script><\/pre>\n<div id=\"fbuilder\">\n\t<div class=\"cff-processing-form\"><\/div>\t<div id=\"fbuilder_1\">\n\t\t<div id=\"formheader_1\"><\/div>\n\t\t<div id=\"fieldlist_1\"><\/div>\n\t\t<div class=\"clearer\"><\/div>\n\t<\/div>\n<\/div>\n\t<div id=\"cp_subbtn_1\" class=\"cp_subbtn\" style=\"display:none;\"><\/div><div class=\"clearer\"><\/div>\n\t<input type=\"hidden\" id=\"_cpcff_public_nonce\" name=\"_cpcff_public_nonce\" value=\"a555ea2a34\" \/><input type=\"hidden\" name=\"_wp_http_referer\" value=\"\/cs\/wp-json\/wp\/v2\/pages\/471\/\" \/><\/form>\n\t\n\n<h3 class=\"wp-block-heading\">\u010c\u00e1st 1 nebo \u010d\u00e1st 2 podle DIN 2605<\/h3>\n\n<p>V norm\u011b DIN 2605 se rozli\u0161uje mezi sn\u00ed\u017een\u00fdm stupn\u011bm vyu\u017eit\u00ed materi\u00e1lu a pln\u00fdm stupn\u011bm vyu\u017eit\u00ed. U pln\u00e9ho stupn\u011b vyu\u017eit\u00ed, tedy u kolen podle \u010d\u00e1sti 2, je tlou\u0161\u0165ka st\u011bny na vnit\u0159n\u00ed stran\u011b ohybu v\u00fdrazn\u011b v\u011bt\u0161\u00ed. Na rozd\u00edl od EN 10253 norma neuv\u00e1d\u00ed vzorec pro v\u00fdpo\u010det, ale p\u0159\u00edslu\u0161n\u00e9 tlou\u0161\u0165ky st\u011bn uv\u00e1d\u00ed v tabulk\u00e1ch.&#13;\n<\/p>\n\n<p>Kolena podle \u010d\u00e1sti 1 nemaj\u00ed zes\u00edlen\u00ed na vnit\u0159n\u00edm polom\u011bru. Pro cel\u00e9 koleno plat\u00ed stejn\u00e9 tolerance tlou\u0161\u0165ky st\u011bny.&#13;\n<\/p>\n\n<figure class=\"wp-block-gallery alignfull has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" data-id=\"721\" src=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_07.jpg\" alt=\"\" class=\"wp-image-721\" srcset=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_07.jpg 800w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_07-300x200.jpg 300w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_07-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" data-id=\"728\" src=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_05.jpg\" alt=\"Orbit&#xE1;ln&#xED; &#xFA;kos\" class=\"wp-image-728\" srcset=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_05.jpg 800w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_05-300x200.jpg 300w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_05-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" data-id=\"717\" src=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_01.jpg\" alt=\"\" class=\"wp-image-717\" srcset=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_01.jpg 800w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_01-300x200.jpg 300w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/10\/Rohrbogen_01-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/figure>\n\n<figure class=\"wp-block-image alignleft size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"150\" src=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/06\/biegedurchmesser.jpg\" alt=\"Kolena &#x2013; r&#x16F;zn&#xE1; proveden&#xED;\" class=\"wp-image-430\" srcset=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/06\/biegedurchmesser.jpg 1000w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/06\/biegedurchmesser-300x45.jpg 300w, https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/06\/biegedurchmesser-768x115.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n<h2 class=\"wp-block-heading\" id=\"bauarten\">Rozd\u00edly v proveden\u00edch kolen<\/h2>\n\n<p>Kolena se mohou li\u0161it vn\u011bj\u0161\u00edm pr\u016fm\u011brem, tlou\u0161\u0165kou st\u011bny a polom\u011brem ohybu. R\u016fzn\u00e9 normy stanovuj\u00ed pro polom\u011bry ohybu tzv. standardn\u00ed proveden\u00ed. T\u00edm se vytv\u00e1\u0159\u00ed jednotnost, kter\u00e1 m\u00e1 konstrukt\u00e9r\u016fm usnadnit pl\u00e1nov\u00e1n\u00ed.&#13;\n&#13;\nV norm\u00e1ch EN a DIN existuj\u00ed standardn\u00ed proveden\u00ed 2D, 3D, 5D a 10D.&#13;\nAmerick\u00e1 norma ASME B16.9 pou\u017e\u00edv\u00e1 ozna\u010den\u00ed **Long Radius** a **Short Radius**. Tato ozna\u010den\u00ed odpov\u00eddaj\u00ed polom\u011br\u016fm podle EN a DIN \u2013 **Long Radius je podobn\u00fd 3D** a **Short Radius odpov\u00edd\u00e1 2D**.&#13;\n<\/p>\n\n<p>Normy se v\u0161ak v n\u011bkter\u00fdch bodech li\u0161\u00ed. Nap\u0159\u00edklad koleno s vn\u011bj\u0161\u00edm pr\u016fm\u011brem 101,6 mm m\u00e1 v proveden\u00ed 2 podle EN 10253-2:2008 polom\u011br ohybu 190,0 mm. Koleno se stejn\u00fdmi rozm\u011bry v proveden\u00ed Short Radius podle ASME B16.9 m\u00e1 v\u0161ak pouze 177,8 mm.<br\/><br\/>Tot\u00e9\u017e koleno v proveden\u00ed 5D podle EN 10253-2:2008 m\u00e1 polom\u011br ohybu 415,0 mm, zat\u00edmco podle EN 10253-4 (pro austenitick\u00e9 oceli) \u010din\u00ed 410 mm.<br\/><br\/>Je tedy d\u016fle\u017eit\u00e9 d\u00e1vat pozor, aby nedo\u0161lo k z\u00e1m\u011bn\u011b jednotliv\u00fdch proveden\u00ed.<\/p>\n\n<p>V mnoha p\u0159\u00edpadech jsou vy\u017eadov\u00e1na kolena s u\u017e\u0161\u00edmi tolerancemi polom\u011bru ohybu. V takov\u00fdch situac\u00edch je spole\u010dnost SIEKMANN t\u00edm spr\u00e1vn\u00fdm partnerem. Na\u0161e v\u00fdrobn\u00ed postupy umo\u017e\u0148uj\u00ed dosa\u017een\u00ed toleranc\u00ed, kter\u00e9 jsou v\u00fdrazn\u011b p\u0159esn\u011bj\u0161\u00ed ne\u017e hodnoty stanoven\u00e9 normami.&#13;\n&#13;\nZat\u00edmco tolerance polom\u011bru ohybu podle EN 10253-2 \u010din\u00ed \u00b17 mm, my v\u00e1m m\u016f\u017eeme dodat kolena s toleranc\u00ed \u00b11 mm na polom\u011br ohybu.&#13;\n<\/p>\n\n<h3 class=\"wp-block-heading\">Tabulka rozd\u00edl\u016f mezi proveden\u00edmi 2D, 3D a 5D<\/h3>\n\n<p>N\u00e1sleduj\u00edc\u00ed tabulka ukazuje porovn\u00e1n\u00ed proveden\u00ed (polom\u011bru ohybu) podle jednotliv\u00fdch norem. \u00dadaje jsou bez z\u00e1ruky.&#13;\n<\/p>\n\n<p>Pozor: Od roku 2021 plat\u00ed nov\u00e9 vyd\u00e1n\u00ed normy pro feritick\u00e9 oceli \u2013 EN 10253-2:2021. Ta obsahuje v n\u011bkter\u00fdch p\u0159\u00edpadech op\u011bt odli\u0161n\u00e9 polom\u011bry ohybu. N\u00ed\u017ee uveden\u00e1 tabulka zat\u00edm ukazuje pouze rozd\u00edly mezi DIN 2605, EN 10253:2008 a ASME.<br\/><br\/>Pro EN 10253-4 byla dosud platn\u00e1 verze z roku 2008, kter\u00e1 byla nyn\u00ed nahrazena normou DIN EN 10253-4:2025-10. Tak\u00e9 zde do\u0161lo k dal\u0161\u00edm zm\u011bn\u00e1m polom\u011br\u016f ohybu oproti p\u0159edchoz\u00ed norm\u011b.<\/p>\n\n<table id=\"tablepress-3\" class=\"tablepress tablepress-id-3\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Au\u00dfen-<br \/>\n\u00f8<\/th><th class=\"column-2\">EN10253-2<br \/>\n2021:11<br \/>\nBA 2D<\/th><th class=\"column-3\">EN10253-2<br \/>\n2008:09<br \/>\nBA 2D<\/th><th class=\"column-4\">EN10253-4<br \/>\n2008:06<br \/>\nBA 2D<\/th><th class=\"column-5\">EN10253-2<br \/>\n2021:11<br \/>\nBA 3D<\/th><th class=\"column-6\">EN10253-2<br \/>\n2008:09<br \/>\nBA 3D<\/th><th class=\"column-7\">EN10253-4<br \/>\n2008:06<br \/>\nBA 3D<\/th><th class=\"column-8\">EN10253-2<br \/>\n2021:11<br \/>\nBA 5D<\/th><th class=\"column-9\">EN10253-2<br \/>\n2008:09<br \/>\nBA 5D<\/th><th class=\"column-10\">EN10253-4<br \/>\n2008:06<br \/>\nBA 5D<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">17,2<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">20,0<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">21,3<\/td><td class=\"column-2\">17,5<\/td><td class=\"column-3\">25,0<\/td><td class=\"column-4\">25,0<\/td><td class=\"column-5\">28,0<\/td><td class=\"column-6\">38,0<\/td><td class=\"column-7\">28,0<\/td><td class=\"column-8\">42,5<\/td><td class=\"column-9\">42,5<\/td><td class=\"column-10\">45,0<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">25,0<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">27,5<\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">26,9<\/td><td class=\"column-2\">25,0<\/td><td class=\"column-3\">25,0<\/td><td class=\"column-4\">25,0<\/td><td class=\"column-5\">29,0<\/td><td class=\"column-6\">38,0<\/td><td class=\"column-7\">29,0<\/td><td class=\"column-8\">57,5<\/td><td class=\"column-9\">57,5<\/td><td class=\"column-10\">57,0<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">30,0<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">31,8<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">35,0<\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">33,7<\/td><td class=\"column-2\">25,0<\/td><td class=\"column-3\">25,0<\/td><td class=\"column-4\">28,0<\/td><td class=\"column-5\">38,0<\/td><td class=\"column-6\">38,0<\/td><td class=\"column-7\">38,0<\/td><td class=\"column-8\">72,5<\/td><td class=\"column-9\">72,5<\/td><td class=\"column-10\">72,0<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">35,0<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\">38,0<\/td><td class=\"column-2\">32,5<\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">45,0<\/td><td class=\"column-6\">45,0<\/td><td class=\"column-7\"><\/td><td class=\"column-8\">82,5<\/td><td class=\"column-9\">82,5<\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-12\">\n\t<td class=\"column-1\">42,4<\/td><td class=\"column-2\">32,0<\/td><td class=\"column-3\">32,0<\/td><td class=\"column-4\">32,0<\/td><td class=\"column-5\">48,0<\/td><td class=\"column-6\">48,0<\/td><td class=\"column-7\">48,0<\/td><td class=\"column-8\">92,5<\/td><td class=\"column-9\">92,5<\/td><td class=\"column-10\">93,0<\/td>\n<\/tr>\n<tr class=\"row-13\">\n\t<td class=\"column-1\">44,5<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-14\">\n\t<td class=\"column-1\">48,3<\/td><td class=\"column-2\">38,0<\/td><td class=\"column-3\">38,0<\/td><td class=\"column-4\">38,0<\/td><td class=\"column-5\">57,0<\/td><td class=\"column-6\">57,0<\/td><td class=\"column-7\">57,0<\/td><td class=\"column-8\">107,5<\/td><td class=\"column-9\">109,5<\/td><td class=\"column-10\">108,0<\/td>\n<\/tr>\n<tr class=\"row-15\">\n\t<td class=\"column-1\">51,0<\/td><td class=\"column-2\">45,0<\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">63,0<\/td><td class=\"column-6\">63,0<\/td><td class=\"column-7\"><\/td><td class=\"column-8\">115,0<\/td><td class=\"column-9\">122,5<\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-16\">\n\t<td class=\"column-1\">54,0<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-17\">\n\t<td class=\"column-1\">57,0<\/td><td class=\"column-2\">52,5<\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">72,0<\/td><td class=\"column-6\">72,0<\/td><td class=\"column-7\"><\/td><td class=\"column-8\">127,5<\/td><td class=\"column-9\">130,0<\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-18\">\n\t<td class=\"column-1\">60,3<\/td><td class=\"column-2\">51,0<\/td><td class=\"column-3\">51,0<\/td><td class=\"column-4\">51,0<\/td><td class=\"column-5\">76,0<\/td><td class=\"column-6\">76,0<\/td><td class=\"column-7\">76,0<\/td><td class=\"column-8\">135,0<\/td><td class=\"column-9\">137,5<\/td><td class=\"column-10\">135,0<\/td>\n<\/tr>\n<tr class=\"row-19\">\n\t<td class=\"column-1\">63,5<\/td><td class=\"column-2\">57,5<\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">82,5<\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\">142,5<\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-20\">\n\t<td class=\"column-1\">70,0<\/td><td class=\"column-2\">65,0<\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">92,0<\/td><td class=\"column-6\">92,0<\/td><td class=\"column-7\"><\/td><td class=\"column-8\">160,0<\/td><td class=\"column-9\">160,0<\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-21\">\n\t<td class=\"column-1\">76,1<\/td><td class=\"column-2\">63,0<\/td><td class=\"column-3\">63,0<\/td><td class=\"column-4\">63,0<\/td><td class=\"column-5\">95,0<\/td><td class=\"column-6\">95,0<\/td><td class=\"column-7\">95,0<\/td><td class=\"column-8\">175,0<\/td><td class=\"column-9\">175,0<\/td><td class=\"column-10\">175,0<\/td>\n<\/tr>\n<tr class=\"row-22\">\n\t<td class=\"column-1\">82,5<\/td><td class=\"column-2\">77,5<\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">107,5<\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\">190,0<\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-23\">\n\t<td class=\"column-1\">88,9<\/td><td class=\"column-2\">76,0<\/td><td class=\"column-3\">76,0<\/td><td class=\"column-4\">76,0<\/td><td class=\"column-5\">114,0<\/td><td class=\"column-6\">114,0<\/td><td class=\"column-7\">114,0<\/td><td class=\"column-8\">205,0<\/td><td class=\"column-9\">207,5<\/td><td class=\"column-10\">205,0<\/td>\n<\/tr>\n<tr class=\"row-24\">\n\t<td class=\"column-1\">95,0<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-25\">\n\t<td class=\"column-1\">101,6<\/td><td class=\"column-2\">95,0<\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">133,0<\/td><td class=\"column-6\">133,0<\/td><td class=\"column-7\"><\/td><td class=\"column-8\">237,5<\/td><td class=\"column-9\">235,0<\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-26\">\n\t<td class=\"column-1\">108,0<\/td><td class=\"column-2\">100,0<\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">142,5<\/td><td class=\"column-6\">142,5<\/td><td class=\"column-7\"><\/td><td class=\"column-8\">253,0<\/td><td class=\"column-9\">253,0<\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-27\">\n\t<td class=\"column-1\">114,3<\/td><td class=\"column-2\">102,0<\/td><td class=\"column-3\">102,0<\/td><td class=\"column-4\">102,0<\/td><td class=\"column-5\">152,0<\/td><td class=\"column-6\">152,0<\/td><td class=\"column-7\">152,0<\/td><td class=\"column-8\">270,0<\/td><td class=\"column-9\">270,0<\/td><td class=\"column-10\">270,0<\/td>\n<\/tr>\n<tr class=\"row-28\">\n\t<td class=\"column-1\">121,0<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-29\">\n\t<td class=\"column-1\">127,0<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">175,0<\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-30\">\n\t<td class=\"column-1\">133,0<\/td><td class=\"column-2\">125,0<\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">181,0<\/td><td class=\"column-6\">181,0<\/td><td class=\"column-7\"><\/td><td class=\"column-8\">312,5<\/td><td class=\"column-9\">311,5<\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-31\">\n\t<td class=\"column-1\">139,7<\/td><td class=\"column-2\">127,0<\/td><td class=\"column-3\">127,0<\/td><td class=\"column-4\">127,0<\/td><td class=\"column-5\">190,0<\/td><td class=\"column-6\">190,0<\/td><td class=\"column-7\">190,0<\/td><td class=\"column-8\">330,0<\/td><td class=\"column-9\">330,0<\/td><td class=\"column-10\">330,0<\/td>\n<\/tr>\n<tr class=\"row-32\">\n\t<td class=\"column-1\">146,0<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">-<\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-33\">\n\t<td class=\"column-1\">152,4<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">215,0<\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-34\">\n\t<td class=\"column-1\">159,0<\/td><td class=\"column-2\">150,0<\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">216,0<\/td><td class=\"column-6\">216,0<\/td><td class=\"column-7\"><\/td><td class=\"column-8\">375,0<\/td><td class=\"column-9\">375,0<\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-35\">\n\t<td class=\"column-1\">165,1<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-36\">\n\t<td class=\"column-1\">168,3<\/td><td class=\"column-2\">152,0<\/td><td class=\"column-3\">152,0<\/td><td class=\"column-4\">152,0<\/td><td class=\"column-5\">229,0<\/td><td class=\"column-6\">229,0<\/td><td class=\"column-7\">229,0<\/td><td class=\"column-8\">390,0<\/td><td class=\"column-9\">390,0<\/td><td class=\"column-10\">390,0<\/td>\n<\/tr>\n<tr class=\"row-37\">\n\t<td class=\"column-1\">177,8<\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">250,0<\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-38\">\n\t<td class=\"column-1\">193,7<\/td><td class=\"column-2\">180,0<\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\">270,0<\/td><td class=\"column-6\">270,0<\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td>\n<\/tr>\n<tr class=\"row-39\">\n\t<td class=\"column-1\">219,1<\/td><td class=\"column-2\">203,0<\/td><td class=\"column-3\">203,0<\/td><td class=\"column-4\">203,0<\/td><td class=\"column-5\">305,0<\/td><td class=\"column-6\">305,0<\/td><td class=\"column-7\">305,0<\/td><td class=\"column-8\">510,0<\/td><td class=\"column-9\">515,0<\/td><td class=\"column-10\">510,0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n<h2 class=\"wp-block-heading\" id=\"biegeradius\">Jak\u00e9 polom\u011bry ohybu nab\u00edz\u00ed Siekmann Rohrbogen?<\/h2>\n\n<p>Vyr\u00e1b\u00edme kolena tak\u00e9 v rozm\u011brech mimo standardn\u00ed polom\u011bry 2D, 3D a 5D. Na\u0161e dob\u0159e vybaven\u00e9 portfolio n\u00e1stroj\u016f n\u00e1m umo\u017e\u0148uje nab\u00edzet mnoho speci\u00e1ln\u00edch rozm\u011br\u016f a\u017e do vn\u011bj\u0161\u00edho pr\u016fm\u011bru 219 mm.&#13;\n<\/p>\n\n<p>V n\u00e1sleduj\u00edc\u00ed tabulce jsou uvedeny v\u0161echny polom\u011bry ohybu, ze kter\u00fdch jsme ji\u017e vyr\u00e1b\u011bli kolena.&#13;\n<\/p>\n\n<p>Ptejte se tak\u00e9 na jin\u00e9 polom\u011bry ohybu.<\/p>\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td>Vn\u011bj\u0161\u00ed pr\u016fm\u011br<\/td><td>Polom\u011br ohybu R =<\/td><\/tr><tr><td>10<\/td><td>20<\/td><\/tr><tr><td>14<\/td><td>20<\/td><\/tr><tr><td>16<\/td><td>16<\/td><\/tr><tr><td>18<\/td><td>21<\/td><\/tr><tr><td>20<\/td><td>16 &#8211; 25 &#8211; 26,5<\/td><\/tr><tr><td>21,3<\/td><td>17,5 &#8211; 19,5 &#8211; 25 &#8211; 27,5 &#8211; 28 &#8211; 38 &#8211; 42,5 &#8211; 43,5 &#8211; 150<\/td><\/tr><tr><td>22<\/td><td>38 &#8211; 45 &#8211; 110<\/td><\/tr><tr><td>25<\/td><td>21 &#8211; 25 &#8211; 27,5 &#8211; 30 &#8211; 34 &#8211; 44 &#8211; 45 &#8211; 53 &#8211; 60 &#8211; 90<\/td><\/tr><tr><td>26,9<\/td><td>24 &#8211; 25 &#8211; 25,5 &#8211; 28,75 &#8211; 29 &#8211; 30 &#8211; 32 &#8211; 34 &#8211; 38 &#8211; 39 &#8211; 40 &#8211; 42,5 &#8211; 47,5 &#8211; 50 &#8211; 52,5 &#8211; 57,5 &#8211; 58,5 &#8211; 67,5 &#8211; 70 &#8211; 85 &#8211; 100 &#8211; 190<\/td><\/tr><tr><td>28<\/td><td>28,5 &#8211; 32,5 &#8211; 33,5 &#8211; 35 &#8211; 42 &#8211; 48<\/td><\/tr><tr><td>30<\/td><td>25 &#8211; 29 &#8211; 33,5 &#8211; 34 &#8211; 35 &#8211; 37,5 &#8211; 45 &#8211; 50 &#8211; 55 &#8211; 62,5 &#8211; 68<\/td><\/tr><tr><td>31,8<\/td><td>24 &#8211; 25 &#8211; 27,5 &#8211; 30 &#8211; 32,5 &#8211; 35 &#8211; 35,5 &#8211; 36,5 &#8211; 38 &#8211; 39 &#8211; 40 &#8211; 45 &#8211; 50 &#8211; 55 &#8211; 60 &#8211; 63,5 &#8211; 67,5 &#8211; 80 &#8211; 100 &#8211; 105 &#8211; 112,5<\/td><\/tr><tr><td>32<\/td><td>25 -28 &#8211; 32,5<\/td><\/tr><tr><td>33,7<\/td><td>22,5 &#8211; 25 &#8211; 26,5 &#8211; 28 &#8211; 30 &#8211; 31,5 &#8211; 35 &#8211; 37,5 &#8211; 38 &#8211; 39,5 &#8211; 40 &#8211; 45 &#8211; 50 &#8211; 60 &#8211; 72,5 &#8211; 125 &#8211; 135 &#8211; 240<\/td><\/tr><tr><td>35<\/td><td>25,5 &#8211; 38 &#8211; 45 &#8211; 45 &#8211; 46,5 &#8211; 60 &#8211; 75 &#8211; 100<\/td><\/tr><tr><td>38<\/td><td>25 &#8211; 27 &#8211; 27,5 &#8211; 29,5 &#8211; 30 &#8211; 32 &#8211; 32,5 &#8211; 35 &#8211; 37,5 &#8211; 37,75 &#8211; 38 &#8211; 38,5 &#8211; 39,5 &#8211; 40 &#8211; 40,5 &#8211; 42,5 &#8211; 45 &#8211; 45,5 &#8211; 46,5 &#8211; 47,5 &#8211; 48 &#8211; 50 &#8211; 51,3 &#8211; 55 &#8211; 57 &#8211; 57,5 &#8211; 59 &#8211; 60 &#8211; 65 &#8211; 66,5 &#8211; 70 &#8211; 75 &#8211; 80 &#8211; 82,5 &#8211; 83 &#8211; 85 &#8211; 93 &#8211; 99 &#8211; 113 &#8211; 145 &#8211; 190<\/td><\/tr><tr><td>40<\/td><td>47,5 &#8211; 51,5 &#8211; 55 &#8211; 185<\/td><\/tr><tr><td>42,4<\/td><td>30 &#8211; 31 &#8211; 32 &#8211; 37,5 &#8211; 38,5 &#8211; 42,5 &#8211; 45 &#8211; 46 &#8211; 48 &#8211; 49 &#8211; 50 &#8211; 57 &#8211; 63 &#8211; 65 &#8211; 70 &#8211; 72,5 &#8211; 75 &#8211; 80 &#8211; 92,5 &#8211; 93,5 &#8211; 185<\/td><\/tr><tr><td>44,5<\/td><td>34 &#8211; 35 &#8211; 40 &#8211; 42,25 &#8211; 45 &#8211; 50 &#8211; 51 &#8211; 52,5 &#8211; 53,5 &#8211; 55 &#8211; 55,5 &#8211; 57,5 &#8211; 70 &#8211; 70,5 &#8211; 80 &#8211; 97,5 &#8211; 99,5 &#8211; 136<\/td><\/tr><tr><td>48,3<\/td><td>38 &#8211; 39 &#8211; 40 &#8211; 42,5 &#8211; 45,5 &#8211; 48 &#8211; 50 &#8211; 51 &#8211; 57 &#8211; 60 &#8211; 75 &#8211; 76,2 &#8211; 80 &#8211; 85 &#8211; 100 &#8211; 107,5 &#8211; 109,5 &#8211; 112,5 &#8211; 115 &#8211; 135 &#8211; 249<\/td><\/tr><tr><td>51<\/td><td>32,5 &#8211; 38 &#8211; 45 &#8211; 46,5 &#8211; 47,5 &#8211; 51 &#8211; 52,5 &#8211; 55 &#8211; 57 &#8211; 61 &#8211; 63,5 &#8211; 65 &#8211; 67,5 &#8211; 69,85 &#8211; 76,2 &#8211; 80 &#8211; 92,5 &#8211; 115 &#8211; 122,5<\/td><\/tr><tr><td>54<\/td><td>50 &#8211; 54 &#8211; 72,5 &#8211; 97,5<\/td><\/tr><tr><td>57<\/td><td>42,5 &#8211; 52,5 &#8211; 53,5 &#8211; 57,5 &#8211; 66 &#8211; 72 &#8211; 75 &#8211; 77,5 &#8211; 84 &#8211; 85 &#8211; 90 &#8211; 92,5 &#8211; 102,5 &#8211; 104 &#8211; 112,5 &#8211; 127,5<\/td><\/tr><tr><td>60,3<\/td><td>38,1 &#8211; 40 &#8211; 48,75 &#8211; 51 &#8211; 55 &#8211; 57,15 &#8211; 60 &#8211; 66 &#8211; 75 &#8211; 76 &#8211; 77,5 &#8211; 78,5 &#8211; 84 &#8211; 90 &#8211; 95 &#8211; 100 &#8211; 101,5 &#8211; 107,5 &#8211; 109 &#8211; 117 &#8211; 122 &#8211; 135 &#8211; 140 &#8211; 240 &#8211; 250 &#8211; 350 &#8211; 400<\/td><\/tr><tr><td>63,5<\/td><td>41,25 &#8211; 46,5 &#8211; 55 &#8211; 57,5 &#8211; 59 &#8211; 64 &#8211; 77,5 &#8211; 82,5 &#8211; 115 &#8211; 142,5 &#8211; 210<\/td><\/tr><tr><td>70<\/td><td>50 &#8211; 55 &#8211; 62,5 &#8211; 65 &#8211; 75 &#8211; 80,5 &#8211; 92 &#8211; 94 &#8211; 95 &#8211; 127,5 &#8211; 161,5 &#8211; 165<\/td><\/tr><tr><td>73<\/td><td>63,5 &#8211; 77,5<\/td><\/tr><tr><td>75<\/td><td>95<\/td><\/tr><tr><td>76,1<\/td><td>63 &#8211; 70 &#8211; 77 &#8211; 87,5 &#8211; 88 &#8211; 95 &#8211; 97 &#8211; 95 &#8211; 105 &#8211; 137 &#8211; 140 &#8211; 140,5 &#8211; 150 &#8211; 175<\/td><\/tr><tr><td>80<\/td><td>78,5 &#8211; 109 &#8211; 160<\/td><\/tr><tr><td>82,5<\/td><td>63,5 &#8211; 77,5 &#8211; 79 &#8211; 80 &#8211; 107,5 &#8211; 114,5 &#8211; 175 &#8211; 190<\/td><\/tr><tr><td>85<\/td><td>116,5<\/td><\/tr><tr><td>88,9<\/td><td>57,5 &#8211; 58 &#8211; 76 &#8211; 78 &#8211; 80 &#8211; 82,5 &#8211; 87,5 &#8211; 114 &#8211; 162,5 &#8211; 165 &#8211; 185 &#8211; 205<\/td><\/tr><tr><td>100<\/td><td>133<\/td><\/tr><tr><td>101,6<\/td><td>76 &#8211; 89 &#8211; 95 &#8211; 97 &#8211; 133,5 &#8211; 150 &#8211; 180 &#8211; 190 &#8211; 237,5<\/td><\/tr><tr><td>102<\/td><td>126 &#8211; 250<\/td><\/tr><tr><td>106<\/td><td>144,5<\/td><\/tr><tr><td>108<\/td><td>100 &#8211; 101,5 &#8211; 142,5 &#8211; 200 &#8211; 250 &#8211; 252,5<\/td><\/tr><tr><td>114,3<\/td><td>102 &#8211; 105 &#8211; 116 &#8211; 135 &#8211; 152 &#8211; 220 &#8211; 270<\/td><\/tr><tr><td>121<\/td><td>112,5 &#8211; 120 &#8211; 152 &#8211; 170 &#8211; 175 &#8211; 282<\/td><\/tr><tr><td>127<\/td><td>107,5 &#8211; 117,5 &#8211; 138,5 &#8211; 175 &#8211; 235 &#8211; 300<\/td><\/tr><tr><td>133<\/td><td>125 &#8211; 181 &#8211; 250 &#8211; 312,5<\/td><\/tr><tr><td>139,7<\/td><td>127 &#8211; 132,5* &#8211; 190 &#8211; 250* &#8211; 270* &#8211; 330*<\/td><\/tr><tr><td>152<\/td><td>142,5* &#8211; 215*<\/td><\/tr><tr><td>159<\/td><td>150* &#8211; 216*<\/td><\/tr><tr><td>168,3<\/td><td>152* &#8211; 229* &#8211; 390*<\/td><\/tr><tr><td>177,8<\/td><td>250*<\/td><\/tr><tr><td>193,7<\/td><td>270*<\/td><\/tr><tr><td>219,1<\/td><td>203* &#8211; 305*<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<p>* vyrobiteln\u00e9 pouze v 90\u00b0<\/p>\n\n<div class=\"wp-block-cover alignfull is-light has-parallax has-custom-content-position is-position-bottom-left\" style=\"min-height:395px;aspect-ratio:unset;\" id=\"siekmann\"><div role=\"img\" aria-label=\"Historie von Siekmann\" class=\"wp-block-cover__image-background wp-image-101 has-parallax\" style=\"background-position:50% 50%;background-image:url(https:\/\/siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/K1600_IMG_7680-1024x416.jpg)\"><\/div><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-20 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-large-font-size\"><\/p>\n<\/div><\/div>\n\n<h2 class=\"wp-block-heading alignwide\">SIEKMANN GMBH &amp; CO. KG<\/h2>\n\n<p>V\u00fdrobce pro speci\u00e1ln\u00ed kolena rurowe!<\/p>\n\n<p>Ji\u017e po n\u011bkolik desetilet\u00ed se specializujeme na v\u00fdrobu speci\u00e1ln\u00edch kolen z bezesov\u00fdch trubek. Nov\u011b vyvinut\u00e9 v\u00fdrobn\u00ed postupy, zku\u0161en\u00ed pracovn\u00edci a neust\u00e1l\u00e1 kontrola ve v\u0161ech f\u00e1z\u00edch v\u00fdroby zaru\u010duj\u00ed nejvy\u0161\u0161\u00ed \u00farove\u0148 kvality.<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Speci\u00e1ln\u00ed rozm\u011bry<\/li>\n\n\n\n<li>V\u00fdroba silnost\u011bnn\u00fdch kolen<\/li>\n\n\n\n<li>V\u00fdroba tak\u00e9 mal\u00fdch s\u00e9ri\u00ed<\/li>\n\n\n\n<li>\u0161irok\u00fd v\u00fdb\u011br zpracov\u00e1van\u00fdch materi\u00e1l\u016f \u2013 uhl\u00edkov\u00e1 ocel \/ nerezov\u00e1 ocel<\/li>\n\n\n\n<li>velmi kr\u00e1tk\u00e9 dodac\u00ed lh\u016fty<\/li>\n\n\n\n<li>V\u00fdroba kolen s \u00fazk\u00fdmi tolerancemi<\/li>\n\n\n\n<li>Rozsah rozm\u011br\u016f tak\u00e9 mimo standardn\u00ed proveden\u00ed<\/li>\n<\/ul>\n\n<p>Vzali jsme si za c\u00edl dod\u00e1vat kolena rychle, spolehliv\u011b a v nejvy\u0161\u0161\u00ed kvalit\u011b. \u0160irok\u00fd v\u00fdb\u011br n\u00e1stroj\u016f n\u00e1m umo\u017e\u0148uje vyr\u00e1b\u011bt t\u00e9m\u011b\u0159 v\u0161echna kolena v rozsahu rozm\u011br\u016f od 13,7 mm do 219,1 mm \u2013 zejm\u00e9na v oblasti silnost\u011bnn\u00fdch proveden\u00ed.&#13;\n<\/p>\n\n<p>Poznejte n\u00e1s na n\u00e1sleduj\u00edc\u00edch str\u00e1nk\u00e1ch a nev\u00e1hejte n\u00e1s kontaktovat. T\u011b\u0161\u00ed n\u00e1s v\u00e1\u0161 z\u00e1jem.&#13;\n<\/p>\n\n<p>Pokud m\u00e1te popt\u00e1vku nebo n\u00e1s chcete kontaktovat, vyu\u017eijte pros\u00edm n\u00ed\u017ee uveden\u00fd formul\u00e1\u0159. M\u016f\u017eete n\u00e1s tak\u00e9 kontaktovat p\u0159\u00edmo \u2013 p\u0159\u00edslu\u0161n\u00e9 kontaktn\u00ed osoby najdete v nab\u00eddce \u201eKontakt\u201c.<\/p>\n\n<div class=\"wp-block-cover alignfull is-light has-parallax\" style=\"min-height:655px;aspect-ratio:unset;\"><div class=\"wp-block-cover__image-background wp-image-107 has-parallax\" style=\"background-position:50% 50%;background-image:url(https:\/\/siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/unbenannt-8.jpg)\"><\/div><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<h2 class=\"wp-block-heading has-ast-global-color-5-color has-text-color has-link-color wp-elements-7dd79a7699aac09920c23bf8f82f3177\">Historie<\/h2>\n\n\n\n<p class=\"has-ast-global-color-5-color has-text-color has-link-color wp-elements-152ebbef00d52425369b2a7ac5f3830e\">V roce 1907 byla zalo\u017eena firma Siekmann jako vesnick\u00e1 kov\u00e1rna. Zpo\u010d\u00e1tku se vyr\u00e1b\u011bly kov\u00e1\u0159sk\u00e9 d\u00edly pro m\u00edstn\u00ed zem\u011bd\u011blstv\u00ed. Od roku 1928 se za\u010daly vyr\u00e1b\u011bt prvn\u00ed produkty pro topen\u00e1\u0159sk\u00fd sektor. Prvn\u00ed kolena byla \u00fasp\u011b\u0161n\u011b vyrobena v roce 1940.&#13;\n&#13;\nV roce 1957 vznikl nov\u00fd v\u00fdrobn\u00ed z\u00e1vod v Lohne. Od roku 1970 byly prov\u00e1d\u011bny prvn\u00ed pokusy s v\u00fdrobou silnost\u011bnn\u00fdch kolen.&#13;\n&#13;\nV roce 1987 byla firma Siekmann nov\u011b zalo\u017eena v B\u00fcnde. Od roku 1992 byla v\u00fdroba p\u0159eorientov\u00e1na na speci\u00e1ln\u00ed kolena s velk\u00fdmi tlou\u0161\u0165kami st\u011bny. Pro tento \u00fa\u010del byly vyvinuty nov\u00e9 v\u00fdrobn\u00ed postupy, kter\u00e9 jsou z\u00e1sadn\u00ed pro dne\u0161n\u00ed \u00fasp\u011bch spole\u010dnosti.&#13;\n&#13;\nV n\u00e1sleduj\u00edc\u00edch letech byly zakoupeny nov\u00e9 pozemky a postavena nov\u00e1 v\u00fdrobn\u00ed hala.&#13;\n<\/p>\n\n\n\n<p class=\"has-text-align-center has-large-font-size\"><\/p>\n<\/div><\/div>\n\n<h2 class=\"wp-block-heading\" id=\"referenzen\">Reference<\/h2>\n\n<ul class=\"wp-block-list\">\n<li>Total S.A.<\/li>\n\n\n\n<li>Siemens<\/li>\n\n\n\n<li>Hitachi Power<\/li>\n\n\n\n<li>Alstom Power<\/li>\n\n\n\n<li>Exxon Mobil Production<\/li>\n\n\n\n<li>Buhlmann Rohr-Fittings- Stahlhandel<\/li>\n\n\n\n<li>STAROFIT Klose GmbH &amp; Co. KG<\/li>\n\n\n\n<li>ThyssenKrupp Schulte GmbH<\/li>\n\n\n\n<li>RFF Rohr Flansch Fittings Handels GmbH<\/li>\n\n\n\n<li>Oschatz GmbH<\/li>\n\n\n\n<li>BHR Engineering &amp; Construction<\/li>\n\n\n\n<li>Piping- Service Steuer Handelsges. mbH<\/li>\n<\/ul>\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kolena p\u0159\u00edmo od v\u00fdrobce \u2013 Siekmann Siekmann GmbH &amp; Co. KG je ji\u017e des\u00edtky let va\u0161\u00edm spolehliv\u00fdm partnerem pro bezesov\u00e1 kolena \u2013 vyr\u00e1b\u011bn\u00e1 v N\u011bmecku. Zpracov\u00e1v\u00e1me ocel a nerezovou ocel a specializujeme se na v\u00fdrobu silnost\u011bnn\u00fdch sva\u0159ovac\u00edch kolen a speci\u00e1ln\u00edch kolen. Na\u0161\u00ed silnou str\u00e1nkou je p\u0159esn\u00e9 tv\u00e1\u0159en\u00ed, a to i p\u0159i mal\u00fdch s\u00e9ri\u00edch a kr\u00e1tk\u00fdch [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"plain-container","ast-site-content-layout":"normal-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"disabled","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-471","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - 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