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。

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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。

youdao