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 /  / Pipe shaping

Pipe shaping and continuous tack-welding

Hot wide strip in the forming machine

During the first step of the two-step process, the hot wide strip passes through a forming machine to be shaped to a pipe. The resulting pipe diameter depends on the strip width and on the run-in angle of the strip into the forming machine.

The forming unit consists of a three-roll bending system with external roll cage. In the run-in section, the starting material is subjected to ultrasonic testing for laminations over its entire width. After forming, the strip edges of the shaped pipe are joined by MAG tack-welding.

In the run-out section, the continuous pipe string produced in this way is cut to the specified lengths by a flying plasma burner.

Continue to Submerged-arc welding


Dr.-Ing. Carsten Holste

Dr.-Ing. Carsten Holste
Plant Manager

Phone: +49 5341 21-6399
Fax: +49 5341 21-7813

© Mannesmann Grossrohr GmbH
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