Title:
MANUFACTURE OF PIPE HAVING FLANGE
Document Type and Number:
Japanese Patent JP3474698
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance the fatigue strength at the connecting part between a flange and pipe with simple working, high productibity inexpensively.
SOLUTION: A reinforcing pipe 2 having the outer diameter smaller than the inner diameter of a main pipe 1 is inserted into the end of the main pipe 1 where the flange 3 is welded, the reinforcing pipe 2 is flared together with the main pipe 1 using a flaring tool, whereby the reinforcing pipe 2 is tightly brought into contact with the main pipe 1.
Inventors:
Noriyuki Takahashi
Yoshitaka Kubo
Takeshi Ogihara
Yoshitaka Kubo
Takeshi Ogihara
Application Number:
JP35222495A
Publication Date:
December 08, 2003
Filing Date:
December 28, 1995
Export Citation:
Assignee:
Hino Motors Ltd.
Soshin Co., Ltd.
Soshin Co., Ltd.
International Classes:
B21D19/00; B21D39/04; B21D39/06; B21D41/02; B23K9/028; F16L23/024; F16L23/026; F16L23/028; (IPC1-7): B21D39/04; B21D39/06; F16L23/024; F16L23/026; F16L23/028
Domestic Patent References:
| JP5037026A | ||||
| JP482318A | ||||
| JP5195767A | ||||
| JP669575U | ||||
| JP62180622U |
Attorney, Agent or Firm:
Shinichi Kikuchi (1 person outside)