卸扣

At last fasten tension chain ends with a shackle.

最后卸掉拉紧器，用卸扣紧固拉紧链的末端。

Ensure that tongs, which are not back at the sidethe floor.

钻杆卸扣时，确保钳牙咬在接头上， 不要咬在耐磨层或台肩部位。

Terminal may be hook link and shackle.

末端件可以是吊钩，吊环，卸扣等。

Shall we start to break out the pipe?

开始卸扣 吗 ？

All cable shall be measured up to utilization ; shackles must comply with stipulated weight scope.

所有钢丝绳应通过检查，合格的方可使用，卸扣必须在规定吨位内使用。