Title:
管継手
Document Type and Number:
Japanese Patent JP4058733
Kind Code:
B2
Abstract:
A pipe coupling 30 comprises a tubular body 31 for a pipe 32 to be inserted in through the rear end thereof, a front ring 33 and a back ring 34 to be fitted around the pipe 32 projecting from the rear end of the body 31, and a cap nut 35 for tightening up the front and back rings 33, 34 to fix the pipe 32 to the body 31. The back ring 34 is made of an alloy comprising, in % by weight, 0.001 to 0.01% of C, up to 5% of Si, up to 2% of Mn, up to 0.03% of P, up to 100 ppm of S, up to 50 ppm of O, 18 to 25% of Cr, 15 to 25% of Ni, 4.5 to 7.0% of Mo, 0.5 to 3.0% of Cu, 0.1 to 0.3% of N, and the balance substantially Fe and other inevitable impurities.
Inventors:
Ryo Matsuhashi
Kazuhiro Suetsugu
Miyagawa Hideyuki
Toshio Kita
Kyota Sogabe
Kazuhiro Yoshikawa
Akihiro Morimoto
Junji Sato
Kunihiko Omichi
Yoshinori Shimomura
Takayasu Nakahama
Kazuhiro Suetsugu
Miyagawa Hideyuki
Toshio Kita
Kyota Sogabe
Kazuhiro Yoshikawa
Akihiro Morimoto
Junji Sato
Kunihiko Omichi
Yoshinori Shimomura
Takayasu Nakahama
Application Number:
JP2002199919A
Publication Date:
March 12, 2008
Filing Date:
July 09, 2002
Export Citation:
Assignee:
Nippon Steel & Sumikin Stainless Steel Co., Ltd.
Fujikin Co., Ltd.
Fujikin Co., Ltd.
International Classes:
F16L19/08; C22C38/00; C22C38/42; C22C38/44; C22C38/46; F16K25/00; F16K27/00; F16L19/02; F16L19/04
Domestic Patent References:
| JP8014449A | ||||
| JP2002069590A |
Attorney, Agent or Firm:
Norihiko Hibi
Einosuke Kishimoto
Akira Watanabe
Matsumura Naoto
Einosuke Kishimoto
Akira Watanabe
Norihiko Hibi
Kiyosue Yasuko
Einosuke Kishimoto
Akira Watanabe
Matsumura Naoto
Einosuke Kishimoto
Akira Watanabe
Norihiko Hibi
Kiyosue Yasuko