Characteristics：

Adopts national patent technology, clamps any pipes within its application range without changing

any parts.

Adopts braking hoop to achieve braking, simple structure, convenient dismounting and adjusting.

Adopts coupling air tube clutch, stable and reliable gear shifting may  be conducted without

stopping the machine.

Being equipped with the safety door, safety and the tong head’s rigidity is improved.

With the backup tong suspending and the master tong floating over the backup tong and moving in

pace with the pipe, the spring suspension device is spared, besides, the wear of the pipe string in

the course of the make-up and break-out operation can be reduced.

Can support the manipulator, the multichannel valve controls the horizontal movement and lifting

movement of the master tong and the backup tong with flexible operation and accurate

positioning.

With optional torque control system to display, record and control the make-up torque.