High strength heavy wall sour service seamless line pipe suitable for deep water applications has been developed by Sumitomo Metal Industries, Ltd.,. This paper describes the concept of developing these pipes applying inline heat treatment technology, equipped in a newly constructed, medium-size seamless mill. Increasing hardenability through inline heat treatment achieved higher strength (X70) for heavy wall pipe (40mm) even though carbon equivalent was lower than in a conventional Q&T process. Good toughness was obtained by the control of microalloying elements such as titanium or sulfur. The produced pipe passed the hydrogen-induced cracking (HIC) test conducted according to NACE TM 0284 solution A. Controlling the microstructure and suppressing maximum hardness, utilizing the uniform quenching facility during inline heat treatment, contributed to the test result. Satisfactory data on weldability for practical use were also obtained.
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2004 International Pipeline Conference
October 4–8, 2004
Calgary, Alberta, Canada
Conference Sponsors:
- International Petroleum Technology Institute
ISBN:
0-7918-4176-6
PROCEEDINGS PAPER
Development of High-Strength Heavy-Wall Sour-Service Seamless Line Pipe for Deep Water by Applying Inline Heat Treatment
Masahiko Hamada,
Masahiko Hamada
Sumitomo Metal Industries, Ltd.
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Nobuyuki Hisamune,
Nobuyuki Hisamune
Sumitomo Metal Industries, Ltd., Osaka, Japan
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Nobutoshi Murao,
Nobutoshi Murao
Sumitomo Metal Industries, Ltd., Osaka, Japan
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Hajime Osako,
Hajime Osako
Sumitomo Metal Industries, Ltd., Osaka, Japan
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Tsuneo Murase
Tsuneo Murase
Sumitomo Metal Industries, Ltd., Osaka, Japan
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Yuji Arai
Sumitomo Metal Industries, Ltd.
Kunio Kondo
Sumitomo Metal Industries, Ltd.
Masahiko Hamada
Sumitomo Metal Industries, Ltd.
Nobuyuki Hisamune
Sumitomo Metal Industries, Ltd., Osaka, Japan
Nobutoshi Murao
Sumitomo Metal Industries, Ltd., Osaka, Japan
Hajime Osako
Sumitomo Metal Industries, Ltd., Osaka, Japan
Tsuneo Murase
Sumitomo Metal Industries, Ltd., Osaka, Japan
Paper No:
IPC2004-0275, pp. 1797-1804; 8 pages
Published Online:
December 4, 2008
Citation
Arai, Y, Kondo, K, Hamada, M, Hisamune, N, Murao, N, Osako, H, & Murase, T. "Development of High-Strength Heavy-Wall Sour-Service Seamless Line Pipe for Deep Water by Applying Inline Heat Treatment." Proceedings of the 2004 International Pipeline Conference. 2004 International Pipeline Conference, Volumes 1, 2, and 3. Calgary, Alberta, Canada. October 4–8, 2004. pp. 1797-1804. ASME. https://doi.org/10.1115/IPC2004-0275
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