发明名称 |
TUBULAR THREADED JOINT HAVING IMPROVED LOW TEMPERATURE PERFORMANCE |
摘要 |
In order to provide a tubular threaded joint constituted by a pin and a box each having threads and an unthreaded metal contact portion with excellent galling resistance and gas tightness even in extremely cold environments at −60° C. to −20° C. and rust preventing properties without using a compound grease, a thermoplastic solid lubricating coating containing low friction copolymer particles made from an acrylic-silicone copolymer and preferably further containing a solid lubricant (e.g., graphite) in a thermoplastic polymer matrix (e.g., selected from polyolefin resins and ethylene-vinyl acetate copolymer resins) is formed on the surface of the threads and unthreaded metal contact portion of a pin and/or a box. |
申请公布号 |
EP2635834(B1) |
申请公布日期 |
2016.07.20 |
申请号 |
EP20110838121 |
申请日期 |
2011.11.04 |
申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION;VALLOUREC OIL AND GAS FRANCE |
发明人 |
GOTO, KUNIO;SASAKI, MASAYOSHI |
分类号 |
F16L15/04;C10M103/02;C10M107/02;C10M107/24;C10M107/28;C10M107/50;C10M143/00;C10M145/08;C10M147/02;C10M155/02;C10N20/06;C10N30/06;C10N30/08;C10N30/12;C10N40/00 |
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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