... , main drive system, transmission, double hoist group, mud pump, turntable, derrick, steel wire rope feed mechanism are installed ... /2 a horizontal reciprocating two-cylinder double-acting piston mud pump, through the pneumatic control clutch combination and separation ... Service (We Sell):Rig,water-well driller,engineering driller,rotary driller,directional driller Number of Employees:201 - 300 People ...