無牙痕KHT5500/無牙痕KHT5500動力鉗 KHT5500 hydraulic power tongs is the open power tongs which is applicable to make up or break out 23/8"-31/2" drill pipes， 31/2"-41/2" tubing and 41/2"-51/2" casing during oil field workover operation. And three-jaw-plate clamping device is adopted in the master tong and back tongs. The device may ensure minimum string damage. It has high operation efficiency and may reduce working intensity of the workers. It can enhance screwing quality of the string and reduce string accidents caused by improper workover operation. 1. Application range :Master Tong： 23/8″——51/2″；Back tong： 23/8″——61/2″ 2. Torque range High：2500 ft·lbs/ 3400 N·m Low： 20000 ft·lbs / 27000 N·m 3. Max RPM @40GPM / 150 LPM High： 78 RPM Second High：33 RPM Second Low：22 RPM Low： 9.5 RPM 4.Oil flow 2000 PSI @40 GPM / 14 MPa @150 LPM 5.Overall dimension (L×W×H) 48″×33.9″×67.3″ / 1220×860×1708 mm KHT5500型液壓動力鉗適用于油田修井作業中上卸23/8"-31/2"鉆桿、31/2"-41/2"油管及41/2"-51/2"套管的一種開口式動力鉗，主、背鉗都采用三顎板夾緊機構，保證對管柱最小傷害，其作業效率高，大大降低工人的勞動強度，并能提高管柱螺紋連接質量，減少由于修井作業不當引起的管柱事故等。 鹽城特達鉆采設備有限公司/無牙痕KHT5500/無牙痕KHT5500動力鉗