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Title:
変形性能に優れたパイプライン用高強度鋼管の製造方法
Document Type and Number:
Japanese Patent JP4276480
Kind Code:
B2
Inventors:
Asahi Hitoshi
Eiji Tsuru
Takuya Hara
Yasuhiro Shinohara
Application Number:
JP2003179865A
Publication Date:
June 10, 2009
Filing Date:
June 24, 2003
Export Citation:
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Assignee:
Nippon Steel Corporation
International Classes:
B21B19/08; C21D8/10; B21C37/08; C22C38/00; C22C38/58
Domestic Patent References:
JP2002226945A
JP2002206140A
JP2003003229A
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Hiroshi Kamematsu
Masaya Nishiyama



 
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