大钳销子和铰链必须定期检查磨损情况，如果磨损严重要更换。
Rig tong pins and hinges must be inspected regularly for wear and replaced if any wear is observed.
大钳销子，尾绳销子和螺栓都必须用适当尺寸的开口销加以固定。
Rig tong pins, shackle pins and bolts must be secured with the proper size of split pins.
钻工取下安全弹簧和大钳销子换上合适尺寸的钳头以匹配钻杆或管子的尺寸。
The Floormen remove the safety latch springs and the tong pins and change the tong jaws to match the size of the pipe or tubular to be made up.
钻工们卸掉安全扣合弹簧和大钳销子，换上与要上扣的钻具或管具相匹配的钳头。
The driller ensures that the safety latch springs are replaced on the tong pins.
必须定期检查大钳的折页销子，扣合头和弹簧，如果出现磨损超标，就更换。
The rig tongs hinge pin, latch lock and springs must be inspected at regular intervals and changed out if excessive wear is encountered.
必须定期检查大钳的折页销子，扣合头和弹簧，如果出现磨损超标，就更换。
The rig tongs hinge pin, latch lock and springs must be inspected at regular intervals and changed out if excessive wear is encountered.
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