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X100 (Grade 690) Helical-Welded Linepipe

[+] Author Affiliations
Dengqi Bai

SSAB North America, Muscatine, IA

Laurie Collins, Fathi Hamad, Xiande Chen, Randy Klein

Evraz North America, Regina, SK, Canada

Joe Zhou

TransCanada Pipelines Ltd., Calgary, Alberta, Canada

Paper No. IPC2008-64099, pp. 571-576; 6 pages
  • 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


During the past ten years, linepipe development activities around the world have been focused on high strength steels for Arctic gas transmission. The incentive for this work has been the potential for greater transportation efficiency and lower construction costs associated with the use of higher strength steels. The present paper describes the successful production of both 9.8 mm × 762 mm diameter and 12.7 mm × 1067 mm diameter Grade 690 linepipe. The alloying concept, thermomechanical controlled processing, and the resultant microstructures and mechanical properties will be presented. The key processing parameters which control the microstructure and mechanical behavior of the steels will also be discussed.

Copyright © 2008 by ASME



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