An inside bead smoothing apparatus of a welding steel pipe

Title:

An inside bead smoothing apparatus of a welding steel pipe

Document Type and Number:

Japanese Patent JP6058410

Kind Code:

B2

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Inventors:

Yoshihiro Taniguchi
Ishikawa Hikaru

Application Number:

JP2013016344A

Publication Date:

January 11, 2017

Filing Date:

January 31, 2013

Export Citation:

Assignee:

jfe building materials corporation

International Classes:

B23K13/08; B21C37/08; B21C37/30; B23K13/02

Domestic Patent References:

Foreign References:

US4443677

Attorney, Agent or Firm:

Patent Business Corporation Intect International Patent Office
Yoshinori Ishibashi

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