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