{"id":244,"date":"2021-05-26T14:12:40","date_gmt":"2021-05-26T14:12:40","guid":{"rendered":"https:\/\/www.siekmann-rohrbogen.de\/service\/"},"modified":"2025-02-27T14:36:42","modified_gmt":"2025-02-27T14:36:42","slug":"service","status":"publish","type":"page","link":"https:\/\/www.siekmann-rohrbogen.de\/en\/service\/","title":{"rendered":"Service"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull is-light has-parallax\" style=\"min-height:727px;aspect-ratio:unset;\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\"><\/span><div class=\"wp-block-cover__image-background wp-image-67 has-parallax\" style=\"background-position:50% 50%;background-image:url(https:\/\/siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/20160413-IMG_1091-scaled.jpg)\"><\/div><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-4-color has-text-color has-large-font-size\">Service \/ Downloads<\/p>\n<\/div><\/div>\n\n<h1 class=\"wp-block-heading\">Service with the highest quality standards<\/h1>\n\n<p>QUALITY is our top priority.<\/p>\n\n<p>We always offer our customers the best possible quality and the highest standards.<\/p>\n\n<p>On the following pages we would like to inform you about our quality assurance procedures and the heat treatment methods we use.<\/p>\n\n<h2 class=\"wp-block-heading\">Quality assurance<\/h2>\n\n<p>Our quality assurance system\/quality management system documents and monitors every order from receipt of the pipe to delivery of the elbow.<\/p>\n\n<p>Our control mechanisms guarantee you consistently high quality for every sheet in a production series.<\/p>\n\n<p>Both internal and external audits contribute to this high quality.<\/p>\n\n<p>We are certified and approved according to:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>ISO 9001:2015<\/li>\n\n\n\n<li>DNV GL<\/li>\n\n\n\n<li>PED 2014\/68\/EU (PED 97\/23\/EG)<\/li>\n<\/ul>\n\n<p>You can download the certificates in the download area.<\/p>\n\n<p>In close cooperation with Lloyds Register, Bureau Veritas, Det Norske Veritas and the American Bureau of Shipping, we can also carry out the corresponding inspections.<\/p>\n\n<div class=\"wp-block-cover alignfull is-light has-parallax\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-black-background-color has-background-dim\"><\/span><div class=\"wp-block-cover__image-background wp-image-140 has-parallax\" style=\"background-position:50% 50%;background-image:url(https:\/\/siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/05\/1Bild2.jpg)\"><\/div><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-4-color has-text-color\">Heat treatment<\/h2>\n\n\n\n<p class=\"has-ast-global-color-4-color has-text-color\">Our annealing centre allows us to break new ground in the heat treatment of our pipe bends. We have three heat treatment furnaces that are controlled by a central computer and allow us to use the following processes:<\/p>\n\n\n\n<ul class=\"wp-block-list has-white-color has-text-color\">\n<li>Normalizing<\/li>\n\n\n\n<li>Stress-relief annealing<\/li>\n\n\n\n<li>Solution annealing<\/li>\n<\/ul>\n\n\n\n<p class=\"has-ast-global-color-4-color has-text-color\">All heat treatments are recorded and attached for analysis and later documentation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-4-color has-text-color\">Normalising annealing<\/h3>\n\n\n\n<p class=\"has-ast-global-color-4-color has-text-color\">Normalising, also called normalising, is used to eliminate structural irregularities. The material is brought to a temperature above the transformation point. The pipe bends are then cooled in a controlled manner. This process produces a more uniform and finer microstructure. Some materials require subsequent &#8220;tempering&#8221; in a temperature range of 700-780\u00b0C&#8230;<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-4-color has-text-color\">Stress-relief annealing<\/h3>\n\n\n\n<p class=\"has-ast-global-color-4-color has-text-color\">Stress-relief annealing is used to reduce stresses that arise during deformation from the pipe to the pipe bend. Here, too, the elbows are heated to a certain temperature, depending on the material, but not quite as high as in normalising. Subsequently, they are cooled down in the air.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-4-color has-text-color\">Solution annealing<\/h3>\n\n\n\n<p class=\"has-ast-global-color-4-color has-text-color\">In solution annealing, pipe elbows made of austenitic steel are heated to a temperature of between 1020\u00b0C and 1080\u00b0C. They are then rapidly cooled down in a water bath.<\/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\">Services<\/h2>\n\n<ul class=\"wp-block-list\">\n<li>Preparation of drawings<\/li>\n\n\n\n<li>Wall thickness calculation<\/li>\n\n\n\n<li>Production of small series<\/li>\n\n\n\n<li>mechanical preparation<\/li>\n\n\n\n<li>Surface treatment \/ corrosion protection<\/li>\n\n\n\n<li>additional markings<\/li>\n\n\n\n<li>additional material testing<\/li>\n\n\n\n<li>Parcel shipping<\/li>\n\n\n\n<li>Express delivery<\/li>\n\n\n\n<li>Neutral shipments to end customers<\/li>\n\n\n\n<li>Special packaging (export)<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\" id=\"downloads\">Downloads<\/h2>\n\n<p>Various information can be downloaded in this area.<\/p>\n\n<h3 class=\"wp-block-heading\">Approvals:<\/h3>\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2023\/10\/iso9001_26_en.pdf\">ISO 9001:2015<\/a> \u2013 valid until 31.10.2026\u00a0 \u00a0 \u00a0 \u00a0new ISO9001 Certificate<\/li>\n\n\n\n<li><a href=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2025\/02\/DNV_25.pdf\">DNV<\/a> Det Norske Veritas\u2013 valid until 10.02.2028<\/li>\n\n\n\n<li><a href=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2025\/02\/Siekman-engl-PED-4-3.pdf\">PED 97\/23\/EG<\/a>\u2013 valid until 12.2027<\/li>\n\n\n\n<li><a href=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2025\/02\/Siekmann-engl-AD2000-W0.pdf\">AD2000 W0<\/a>&#8211; valid until 12.2027<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">Company information<\/h3>\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/06\/siekmann_2015_deu.pdf\">Siekmann Infobrosch\u00fcre deutsch<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/06\/siekmann_2015_eng.pdf\">Siekmann Infobrosch\u00fcre englisch<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/06\/verkaufs-und-lieferbedingungen.pdf\">Verkaufs- und Lieferbedingungen<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/06\/materialliste_2011.pdf\">Werkstoffliste<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.siekmann-rohrbogen.de\/wp-content\/uploads\/2021\/06\/radien-liste-neu.pdf\">Biegedurchmesser<\/a><\/li>\n<\/ul>\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Service with the highest quality standards QUALITY is our top priority. We always offer our customers the best possible quality and the highest standards. On the following pages we would like to inform you about our quality assurance procedures and the heat treatment methods we use. Quality assurance Our quality assurance system\/quality management system documents [&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":"","theme-transparent-header-meta":"default","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-244","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.2 - 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