发明名称 |
Corrosion-resistant pipe coupling structures. |
摘要 |
A corrosion-resistant pipe coupling made of carbon steel has on its inner surface an intermediate annular projection directed radially inward. At least an innermost part of the annular projection is formed of corrosion-resistant material such as stainless steel. The annular projection is covered by a corrosion-resistant annular member which is secured by friction welding, electron beam welding, an adhesive or mechanical engagement. The annular member prevents corrosion of the coupling by corrosive fluids flowing in pipes. |
申请公布号 |
EP0163957(A1) |
申请公布日期 |
1985.12.11 |
申请号 |
EP19850105446 |
申请日期 |
1982.03.17 |
申请人 |
KAWASAKI JUKOGYO KABUSHIKI KAISHA |
发明人 |
YOSHIDA, TOSHIO;ITOGA, KOUYU;MATSUI, SHIGETOMO;ATSUTA, TOSHIO |
分类号 |
E21B17/00;E21B17/042;F16L15/04;F16L15/06;F16L58/18 |
主分类号 |
E21B17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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