A manufacturing method of a welding defective detection system and a ERW steel pipe, and a manufacturing method of welding products

Title:

A manufacturing method of a welding defective detection system and a ERW steel pipe, and a manufacturing method of welding products

Document Type and Number:

Japanese Patent JP5909873

Kind Code:

B2

Inventors:

Okabe Nochi
Toshifumi Kodama
Kozo Iizuka
Hiromichi Hori
Kenichi Iwasaki
Tatsuo Koide
Masatoshi Aratani
Shunsuke Toyota

Application Number:

JP2011106935A

Publication Date:

April 27, 2016

Filing Date:

May 12, 2011

Export Citation:

Assignee:

jfe Steel Corporation

International Classes:

B23K13/00; B23K13/08; B23K31/00; G01N21/67; G01N21/88; G01N29/14

Domestic Patent References:

Attorney, Agent or Firm:

Kenichiro Ochiai
Eiichi Kobayashi

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