... elements of RZT-80/105 Directional Drilling Rig (including hydro pump, motor, Pressure valves, oil hoses etc.) are all the original ... venture of Cummins with strong power and reliable performance. Drilling rigs and power station adopts integrative propelling mechanism of the ... rod and high efficiency. 3T hydraulic hoist arm accreted the Drilling Machine, and is convenient for engineering, also, it is ...