Threaded joint for steel pipe
    291.
    发明授权
    Threaded joint for steel pipe 有权
    钢管螺纹接头

    公开(公告)号:US07866706B2

    公开(公告)日:2011-01-11

    申请号:US11547067

    申请日:2005-04-05

    Abstract: 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.

    Abstract translation: 一种用于钢管的螺纹接头,包括一销和一接触面具有螺纹部分和无螺纹金属接触部分的箱体,其中固体润滑膜含有一种或多种选自石墨,云母,碳酸钙和 高岭土,铜粉末和粘合剂形成在销和盒的至少一个接触表面上。 本发明的目的是提供一种用于钢管的螺纹接头,其允许螺纹接头的反复紧固和松动而不会对人体和环境产生不利影响,并且具有优异的耐磨损性,防锈性和气密性 。

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