chain pipe tongs 链式管子钳 ; 链式管钳
pipe tongs wrench 管钳扳手
adjustable pipe tongs 活动管钳 ; 调距螺母
gas pipe tongs 气管钳
gas-pipe tongs 煤气管钳
chain n pipe tongs 链式管子钳
Pipe Tongs and Lines 管钳和绳索
pipe lifting tongs 管吊装夹具
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。
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 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。
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