The series of hydraulic power tongs adopt inner cam rolling-up clamping mechanism, with a hydraulic backup tong. It is an ideal tool for makeup or breakout of various of tubings, and small sizes of casings and drill pipes in workover operation. The tong with extra long rod is available for backup tong to grip tubing body. The power tong also can be equipped with automatic torque control system

1.The advenced automatic hydraulic backuo tong controlled by manual valve matches master tong well

,the back tong freely clamps and escapes from the pipe synchronously,enabling a reliable and flexible combined operation.

2.The dies are common for drill pipe of different specification s bu changing various tongs of the master tong and backup tong.

3.Big speed differences between gear shifts provide a high sppeed at the high gear and a big torque at the low gear.