Title:
METHOD FOR FORMING SPIGOT PROTRUSION OF PIPE
Document Type and Number:
Japanese Patent JP2008185114
Kind Code:
A
Abstract:
To easily form a spigot protrusion of a pipe while surely integrating it with a spigot.
When a protrusion 37 is formed on the outer periphery of the spigot 31 of a metal pipe, a pair of molding members 33A, 33B shaped corresponding to the side face of the protrusion 37 are arranged on an outer face 34 of the spigot 31 at a space equivalent to the width of the protrusion 37. Welding metal 36 is supplied between the molding members 33A, 33B.
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Inventors:
INADA HITOSHI
OBARA MASARU
OBARA MASARU
Application Number:
JP2007018608A
Publication Date:
August 14, 2008
Filing Date:
January 30, 2007
Export Citation:
Assignee:
KUBOTA KK
International Classes:
F16L21/02; B23K9/04; B23K37/06; F16L21/00; F16L21/08; B23K101/06
Domestic Patent References:
| JP2002257274A | 2002-09-11 | |||
| JPH09141496A | 1997-06-03 |
Attorney, Agent or Firm:
Yoshihiro Morimoto
Toshiji Sasahara
Yohei Harada
Toshiji Sasahara
Yohei Harada