Head tong and back tong are all planetary paw clamping machine, each one owning four. There is no need to change parts when the pipe diameter is in the corresponding clamping range.
The drive gear, an enclosed system can keep itself good lubrication from drilling fluids.
We can make remote operation and hydraulic control concerning the switch of makeup and breakout.
There are sewage holes drilled in the rotatory space of die plates which are available for the vertical well and inclined well over the makeup and breakout of pipe.
Rise and fall of single oil cylinder can make the clamping position adjustable and compact while forward and withdraw of air cylinder can make the tong stretch with elasticity, eliminating deviation.