连接两节管子(生产油管、套管或衬管等)所用的带螺纹的连接件。

A threaded coupling used to join two lengths of pipe such as production tubing, casing or liner.

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连接两节管子(生产油管、套管或衬管等)所用的带螺纹的连接件。

A threaded coupling used to join two lengths of pipe such as production tubing, casing or liner.

youdao