Title:
A manufacturing method of a ERW steel pipe
Document Type and Number:
Japanese Patent JP6015686
Kind Code:
B2
Inventors:
Hiromichi Hori
Kenji Sewaki
Kusumoto Eiji
Kenji Sewaki
Kusumoto Eiji
Application Number:
JP2014021959A
Publication Date:
October 26, 2016
Filing Date:
February 07, 2014
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B21C37/083; B21C37/08; B23K13/00
Domestic Patent References:
| JP2179316A | ||||
| JP55128383A |
Attorney, Agent or Firm:
Kenichiro Ochiai