发明名称 |
THREADED JOINT FOR STEEL PIPES |
摘要 |
In a threaded joint for steel pipes which are connected by threaded engagement of a pin member having a tapered male thread, a metal seal-forming portion, and a torque shoulder-forming portion on the end of a pipe, and a box member having a tapered female thread, a metal seal-forming portion, and a torque shoulder forming-portion corresponding to these on the end of a pipe, a buttress thread having contact at the load flanks and the thread root surface and gaps at the thread crest surface and the stabbing flanks is mixed in a single joint with a rugged thread having contact at the load flanks and stabbing flanks and having gaps at the thread root surface and thread crest surface. |
申请公布号 |
CA2578008(A1) |
申请公布日期 |
2006.03.02 |
申请号 |
CA20052578008 |
申请日期 |
2005.08.24 |
申请人 |
SUMITOMO METAL INDUSTRIES, LTD.;VALLOUREC MANNESMANN OIL & GAS FRANCE |
发明人 |
SUGINO, MASAAKI;YAMAMOTO, MIYUKI;NAGASAKU, SHIGEO;IWAMOTO, MICHIHIKO |
分类号 |
F16L15/04;E21B17/042 |
主分类号 |
F16L15/04 |
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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