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1·The novel scheme can solve the problem that speed for adjusting jaw opening is too slow for the prior-art pipe tongs.

新方案能够解决传统管钳调节钳口的开口量时速度过慢的弊端。

2·Lead and backup tong-men should not stand between the two pipe tongs while the driller is making up or breaking out pipe or collars.

当司钻正在上卸钻杆和钻铤时，内外钳工不要站在两个大钳之间。

3·The utility model has the advantages that reversing work does not need to be carried out by manpower with pipe tongs, the operators have no danger and the human casualty accidents can not occur.

本实用 新型的有益效果是不需要人工用管钳倒扣，操作工人没有危险性， 不会出现人身伤亡事故。

4·The fracture of follower tongs holder of pipe pliers is analyzed.

本文研究了管子钳活动钳口断裂现象。

5·Do not let tongs ride the drill pipe.

不许把钳子打在钻杆上转。

6·Coated articles shall be hoisted using wide-belt slings. Chains, cables, tongs, or other equipment that causes damage to the coating will not be permitted, nor will dragging or skidding of the pipe.

用宽吊带吊装涂塑管件，不允许使用链条，钢索，钢钳或者其他破坏涂层的吊装工具，不能拖拉滚动钢管。

7·Power Tongs and Torque Turns Load Cells: Designed for use in power tongs or drill pipe make-up and break-out applications.

动力钳和自动旋紧管箍机的载荷压力传感器：设计用在动力钳或钻杆的组装和拆卸应用中。

8·Fit the rig tongs with the correct jaws for the drill pipe tool joint or the drill collar. Re-install the safety lock springs.

给大钳装上与钻杆接头或钻铤相匹配的钳头，再装上安全锁簧。