Model KHT5500 hydraulic power pliers is suitable for unloading 23/8"-31/2" drill pipe, 31/2"-41/2" tubing and 41/2"-51/2" casing during oilfield workover operations. Both the main and back pliers adopt a three-jaw clamping mechanism to ensure minimum damage to the pipe string. Its operating efficiency is high, greatly reduces the labor intensity of workers, and improves the thread connection quality of the pipe string. Reduce string accidents caused by improper workover operations.