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SAWL 485 for 48” Offshore Application in Thickness up to 41 mm

[+] Author Affiliations
Volker Schwinn, Jürgen Bauer

Aktien-Gesellschaft der Dillinger Hüttenwerke, Dillingen, Germany

Alexander Parunov

United Metallurgical Company - OMK-Steel, Moscow, Russia

Pavel Stepanov

Vyksa Steel Works - OMK Group, Vyksa, Russia

Paper No. IPC2008-64520, pp. 377-384; 8 pages
doi:10.1115/IPC2008-64520
From:
  • 2008 7th International Pipeline Conference
  • 2008 7th International Pipeline Conference, Volume 3
  • Calgary, Alberta, Canada, September 29–October 3, 2008
  • Conference Sponsors: International Petroleum Technology Institute and the Pipeline Division
  • ISBN: 978-0-7918-4859-3 | eISBN: 798-0-7918-3835-8
  • Copyright © 2008 by ASME

abstract

Vyksa Steel Works (VSW), part of United Metallurgical Company (OMK), has manufactured a trial batch of large diameter pipes for subsea pipelines in accordance with the DNV-OS-F101 standard and the specification of the Nord Stream project. The plates were produced by Dillinger Hütte (DH). The batch included 1,220 mm (48″ ) diameter pipes of steel grade SAWL 485 (X70) with a wall thickness of 33 mm and 36 mm. All the requirements were met and OMK/VSW became Russia’s and the CIS’s first qualified producer of subsea pipes in accordance with DNV-OS-F101. In order to meet these high-class property requirements for thick wall pipes a successful development program was performed. The development program is outlined and the test results are explained. As a further consequence of the successful qualification work VSW became one of the two suppliers for the world’s largest and first 48″ diameter pipe subsea pipeline project (Nord Stream). Pipes will be supplied for the most sophisticated segment with wall thicknesses of 30.9 mm, 34.6 mm and even 41.0 mm. Results of manufacturing procedure qualification testing (MPQT) and start of production are presented.

Copyright © 2008 by ASME

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