... system, display, record and control torque deduction Apply to the dumping of oilfield casing, operating efficiency, significantly ... deduction. The clamp has the following characteristics: 1, open type, the best cut Path Design; 2, brake band brake, ... tranches speed, gear used Guadang; 4, with torque table, matching torque control system, display, record and control torque deduction. type casing clamp