THREADED JOINT FOR PIPES |
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| 申请号 | US14929629 | 申请日 | 2015-11-02 | 公开(公告)号 | US20160230119A1 | 公开(公告)日 | 2016-08-11 |
| 申请人 | NIPPON STEEL & SUMITOMO METAL CORPORATION; VALLOUREC MANNESMANN OIL AND GAS FRANCE; | 发明人 | Kunio GOTO; Takayuki KAMIMURA; Masaru TAKAHASHI; Keishi MATSUMOTO; Michihiko IWAMOTO; Ryuichi IMAI; Stephanie RAI; | ||||
| 摘要 | In a threaded joint for pipes constituted by a pin and a box, each having a contact surface comprising a threaded portion and an unthreaded metal contact portion, the contact surface of the pin has a solid corrosion protective, preferably transparent coating based on a UV-curable resin and the contact surface of the box has a solid lubricating coating having plastic or viscoplastic rheological behavior which is preferably formed by the hot melt technique from a composition comprising a thermoplastic polymer, a wax, a metal soap, a corrosion inhibitor, a water-insoluble liquid resin, and a solid lubricant. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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