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Title:
STEEL PIPE AND PRODUCTION METHOD FOR STEEL PIPE
Document Type and Number:
WIPO Patent Application WO/2019/172314
Kind Code:
A1
Abstract:
A steel pipe that includes more than 0.70 but no more than 1.20 mass% of C, no more than 0.03 mass% of P, and no more than 0.30 mass% of Cu and has a weld part that has a metal structure that includes carbides and reheated ferrite.

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Inventors:
AKIDUKI MAKOTO (JP)
MIMACHI SHOHEI (JP)
Application Number:
PCT/JP2019/008882
Publication Date:
September 12, 2019
Filing Date:
March 06, 2019
Export Citation:
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Assignee:
NISSHIN STEEL CO LTD (JP)
International Classes:
C22C38/00; C21D9/08; C21D9/50; C22C38/16; C22C38/58
Domestic Patent References:
WO2004067790A12004-08-12
Foreign References:
CN103205643A2013-07-17
JPS59153868A1984-09-01
JPH08260049A1996-10-08
JP2003035656A2003-02-07
JP2005013535A2005-01-20
JP2005034517A2005-02-10
JPH02156039A1990-06-15
CN104841720A2015-08-19
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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