Title:
PIPE MATERIAL CORRECTION METHOD, AND PIPE MATERIAL INSERTION DEVICE
Document Type and Number:
Japanese Patent JP2018086682
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a pipe material correction method for correcting the end part of a pipe material by raising the roundness more.SOLUTION: A pipe material correction method for correcting the circularity of a pipe material comprises: an intermediate part correcting step S30 of correcting the circularity of an intermediate part in the axial direction of the pipe material; and an end part correcting step S31 of correcting the roundness of the end part containing the axial end of the pipe material so that the intermediate part of the pipe material and the end part of the pipe material may join in the axial direction.SELECTED DRAWING: Figure 7
Inventors:
KISHIGUCHI TETSUYA
IKEZAKI TORU
TORII MASASHI
IKEZAKI TORU
TORII MASASHI
Application Number:
JP2018026355A
Publication Date:
June 07, 2018
Filing Date:
February 16, 2018
Export Citation:
Assignee:
NIPPON STEEL & SUMIKIN ENG CO
International Classes:
B21D3/14
Domestic Patent References:
| JPS5391059A | 1978-08-10 | |||
| JP2012223817A | 2012-11-15 |
Attorney, Agent or Firm:
Sumio Tanai
Mitsuo Teramoto
Hiroshi Yamaguchi
Mitsuo Teramoto
Hiroshi Yamaguchi