连接猫头绳和钳尾绳到大钳上。
内钳必须安装钳尾绳并固定在钳尾桩上。
The breakout tong should be snubbed, preferably to an anchor post.
内钳的钳尾绳应到底座或固定在底座上的钳尾桩上；
The backup tong should be snubbed to the substructure or to an anchor post attached to the substructure.
有时候会把钳尾绳装在井架大腿上，这种方法不可取。
Sometimes the tongs are snubbed to the derrick leg. This method should not be used.
装上大钳锚头绳和钳尾绳，钳尾绳的外径至少是大钳锚头绳的两倍。
Install the make-up line (s) and snub line to the rig tongs. The snub line should be at least twice the size of the tong line.
检查动力钳和尾绳是否在钻台上。
检查动力钳和尾绳是否在钻台上。
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