Hydraulic Jack is used for pulling casing pipes and stuck drilling pipes ... . Operator can be far away from well mouth when application. It is safe and reliable for operation; Using hydra ulic system ... rig and supercharging device, the pressure of hydraulic jack can increase 7 times. Hydraulic Jack 40(Tons) 75(Tons) 150(Tons) Jaw ... ,146 89,127,146,168,177,219(Without Supercharger) Hydraulic Jack