发明名称 |
THREADED JOINT FOR STEEL PIPE AND PROCESS FOR PRODUCING THE SAME |
摘要 |
<p>A threaded joint for a steel pipe comprises a pin and a box with a contact surface having a threaded part and a unthreaded metal contact part, wherein a solid lubricating film containing one or more kinds of lubricating powders selected from graphite, mica, calcium carbonate and kaolin, a copper powder, and a binder is formed on at least one contact surface of the pin and the box. An object of the present invention is to provide a threaded joint for a steel pipe which allows for repeated fastening and loosening of a threaded joint without adversely influencing on a human body and environment, and is excellent in galling resistance, rust preventing property and gas tightness.</p> |
申请公布号 |
EP1736697(A4) |
申请公布日期 |
2012.05.02 |
申请号 |
EP20050728760 |
申请日期 |
2005.04.05 |
申请人 |
SUMITOMO METAL INDUSTRIES, LTD.;VALLOUREC MANNESMANN OIL & GAS FRANCE |
发明人 |
GOTO, KUNIO;IMAI, RYUICHI;OGAWA, YASUHIRO;MINAMI, JUNICHI |
分类号 |
F16L15/00;F16L15/04;C10M103/00;C10M103/02;C10M103/04;C10M103/06;C10M125/00;C10M145/20;C10M149/18;C10N10/02;C10N10/04;C10N40/00;C10N50/08;C10N80/00;E21B17/00;E21B17/042;F16L15/08;F16L58/18 |
主分类号 |
F16L15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|