Gas supply

Top quality line pipes

Flender steel line pipes are being put to use all over the world for the safe, economic transport of oil, gas, water, solids and other media from the site of production/discovery to the consumption location or point of use.

Media-carrying steel pipes by Flender are always longitudinally welded and are exclusively produced using high-frequency resistance welding procedures. Our long-term collaboration with renowned smelting works ensures you have the best quality raw materials and consistently high standards of quality.

According to the corresponding standard regulations, steel pipes can be longitudinally heat-treated immediately after the welding process if necessary, and the mechanical-technological properties of the longitudinal seam area can be optimised in a targeted manner.

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Dear visitor to this website,

the Rudolf Flender Rohr GmbH pipe production in Siegen was permanently closed on December 31, 2020. The production is closed and all supplies and machines have been sold. We ask you to pay attention to this!

To preserve, remember and honor the work of all employees who have written a total of 110 years of company history, this website remains online, even if no more products are offered for sale.

To contact us, please dial +49 (271) 3305-0 or email:

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