Title:
A surface defect detecting method of a mandrel bar
Document Type and Number:
Japanese Patent JP6102843
Kind Code:
B2
Inventors:
Akihiro Ogawa
Takahiro Koshihara
Oozaki saki Seiji
Ken Shimamoto
Takahiro Koshihara
Oozaki saki Seiji
Ken Shimamoto
Application Number:
JP2014135799A
Publication Date:
March 29, 2017
Filing Date:
July 01, 2014
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B21C51/00; B21B25/04; B21B25/06; G01N21/952
Domestic Patent References:
| JP2006212645A | ||||
| JP2008145373A |
Attorney, Agent or Firm:
Kenichiro Ochiai