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Title:
溶接部靭性に優れたラインパイプ向け電縫鋼管
Document Type and Number:
Japanese Patent JP5292830
Kind Code:
B2
Abstract:
In an electric resistance welded steel pipe with excellent weld toughness for a line pipe, the area fraction of minute defects each having a maximum length of less than 50 µm in a projection plane of an electric resistance welded seam is in the range of 0.035 to 0.000006, and the absorbed energy at -40°C measured by a method for an impact test of metallic materials is 100 J or more.

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Inventors:
Yokoyama
Kazuhito Kenmochi
Okabe Nochi
Kozo Iizuka
Application Number:
JP2008015129A
Publication Date:
September 18, 2013
Filing Date:
January 25, 2008
Export Citation:
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Assignee:
jfe Steel Corporation
International Classes:
C22C38/00; C22C38/06; C22C38/58
Domestic Patent References:
JP2007000874A
JP2005281838A
JP2003003233A
Attorney, Agent or Firm:
Eiichi Kobayashi



 
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