Elbow made of round bars - 1.4903

Siekmann - your producer for seamless elbows

We have been specialized in the production of seamless elbows for decades. Newly developed production methods, experienced staff and continuous checks at all stages of production guarantee that our products meet the highest quality standards.

Heat treatment

Our strengths include:

As producer we have set ourselves the task of delivering the highest quality elbows quickly and reliably. With our wide selection of tools we can produce almost any size of elbow – particularly in the thick-walled range - between 14 mm and 219.1 mm in diameter.

Find out more about us on the following pages and do not hesitate to get in touch. We will be pleased to help you.


16 April – 20 April 2018

Tube 2018

We would like to thank you for visiting our stand and your interest in our products at the Tube 2016 in Dusseldorf.

Tube 2018
5th October 2017

DIN EN ISO 9001:2015

From today we are certified according to the latest standard ISO 9001:2015. The certificate is available for download in the download area.
12th December 2016

New universal tester

Siekmann invests into the future. A new universal tester is ready to approve mechanical values.
04 April – 08 April 2016

Tube 2016

Tube 2016
28 May 2014

New tool

We now have the possibility to produce elbwows 8 inch in short radius.
05 May 2014

New brochure

You can download the new info material in the Download section.
07 April – 11 April 2014

Tube 2014

Thank you very much for visiting our booth at Tube 2014 and the interest in our Products.
21 March 2014

New homepage

We are delighted to present our new homepage. Our website has been redesigned with a clearer structure providing in-depth information to website visitors, customers and partners.
14 May – 15 May 2013

Stainless Steel Brno


Firma Siekmann kann mitlerweile auf eine über 100 Jährige Firmengeschicht zurückgreifen. Erfahrungen in der Rohrbogenfertigung haben sich ausgeweitet und wurden im speziellen auf die Produktion von Sonderrohrbogen angewendet.

1907 Grundung der Firma als Dorfschmiede
1928 Ausweitung auf den Heizungssektor
1940 Herstellung der ersten Rohrbogen
1956 Zweigwerk in Lohne entsteht
1970 Erste Versuche mit speziellen dickwandigen Rohrbogen.
1987 Konkurs der alten Firmna Siekmann Rohrbogen
1987 Neugründung der Firma Siekmann GmbH & Co. KG
1992 Herstellung von extrem dickwandigen Sonderrohrbogen
2004 Siekmann wird Ausbildungsbetrieb
2006 Kauf eines nahegelegenen Grundstücks mit einer vorhandenen Lagerhalle
2008 Erstellung eines neuen Wärmebehandlungszentrum
2009 2008-2009 Baubeginn und Fertigstellung einer neuen Halle für die Produktion
2012 25 Jahre Siekmann



Siekmann GmbH und Co. KG
Fischerstraße 4
32257 Bünde
Telefon: +49 5223 4960-0
Telefax: +49 5223 4960-19
E-Mail: info@siekmann-rohrbogen.de
Internet: www.siekmann-rohrbogen.de
Register court: Bad Oeynhausen: HRA 4709

Persönlich haftende Gesellschafterin: Siekmann VerwaltungsGmbH
Register court: Amtsgericht Bad Oeynhausen
Registernummer: HRB 7783

General manager: Jürgen Büscher

Ust.-IdNr. gemäß §27a UStG.: DE 124 335 427
Steuernummer: 310 5785 0049
IBAN DE: 18494501200207425752

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