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... . 1, the clamp from the torque hydraulic motor driven back by clamp rack plunger drive, drive concise, compact structure. 2, Lord, forceps are used in the dorsal surface of clamping rollers climbing, cards ...
...drill pipe, and 2 7/8"- 4½" tubing and 4½"-5½" casing of a dynamic open-clamp . It has the following features: 1, the clamp from the torque hydraulic motor driven back by clamp rack plunger drive, drive conc...
...drill pipe, and 2 7/8"- 4½" tubing and 4½"-5½" casing of a dynamic open-clamp . It has the following features: 1, the clamp from the torque hydraulic motor driven back by clamp rack plunger drive, drive conc...