发明申请
- 专利标题: Threaded joint for steel pipes
- 专利标题(中): 钢管螺纹接头
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申请号: US11329159申请日: 2006-01-11
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公开(公告)号: US20060197343A1公开(公告)日: 2006-09-07
- 发明人: Ryuichi Imai , Kunio Goto , Kaoru Takanashi , Yasuhiro Ogawa
- 申请人: Ryuichi Imai , Kunio Goto , Kaoru Takanashi , Yasuhiro Ogawa
- 主分类号: F16L15/00
- IPC分类号: F16L15/00
摘要:
A threaded joint for steel pipes comprises a pin (1) and a box (2) each having a threaded portion (3a or 3b) and an unthreaded metal-to-metal contact portion (4a or 4b) as contact surfaces which contact each other when the joint is fastened. The contact surfaces (3a and 4a and/or 3b and 4b) of at least one of the pin (1) and the box (2) are coated with a lower layer of a solid lubricating coating containing a solid lubricating powder (e.g., molybdenum disulfide, tungsten disulfide, or graphite) and a binder (e.g., an epoxy or other organic resin) and an upper layer of a solid corrosion protective coating formed by an organic resin which does not contain solid particles.
公开/授权文献
- US07770935B2 Threaded joint for steel pipes 公开/授权日:2010-08-10
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