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Mass Production of X-80 Plate for Bovanenkovo–Ukhta (Yamal-Europe) Gas Pipeline in Russia

[+] Author Affiliations
Kiyoshi Ebihara, Takuya Hara, Nobuhiko Mamada, Toshihiko Adachi

Nippon Steel & Sumitomo Metal Corporation, Chiba, Japan

Shinya Sakamoto

Nippon Steel & Sumitomo Metal Corporation, Hyogo, Japan

Paper No. IPC2014-33372, pp. V003T07A041; 6 pages
  • 2014 10th International Pipeline Conference
  • Volume 3: Materials and Joining; Risk and Reliability
  • Calgary, Alberta, Canada, September 29–October 3, 2014
  • Conference Sponsors: Pipeline Division
  • ISBN: 978-0-7918-4612-4
  • Copyright © 2014 by ASME


This paper describes metallurgical design concept and mass production result of heavy plates for Bovanenkovo-Ukhta (Yamal-Europe) Gas Pipeline project.

The metallurgical design concept was taken as (1) a dual phase microstructure consisting of fine dispersed ferrite and bainite for high strength and high toughness, (2) control of accelerated cooling stop temperature for achieving high yield strength (YS).

In the mass production, the narrow range of strength and elongation and excellent low temperature toughness was achieved (CVN energy at −40°C, and DWTT shear area at −20°C).

Copyright © 2014 by ASME



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