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。
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。
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