Title:
STEPPED PIPE MEMBER AND MANUFACTURING METHOD OF THE SAME
Document Type and Number:
Japanese Patent JP2018083216
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a stepped pipe member excellent in assembly workability and assembly precision and a manufacturing method of the same.SOLUTION: A stepped pipe member 3 is equipped at an axial one end of a large diameter pipe member 1 with a connection part 13 for fixing a small-pipe member 2 having a smaller diameter than that of the large diameter pipe member 1. The connection part 13 has a diameter reduction pipe part 121, and at least one flange part 122 extending to a radially outer side from the diameter reduction pipe part 121. The small-pipe member 2 is expanded and caulked to the connection part 13.SELECTED DRAWING: Figure 1
Inventors:
IMAI CHIEKO
IMAMURA YOSHIHAYA
IMAMURA YOSHIHAYA
Application Number:
JP2016227915A
Publication Date:
May 31, 2018
Filing Date:
November 24, 2016
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
B21D39/04; B21D19/00; B21D41/04
Attorney, Agent or Firm:
Patent business corporation glory patent office