HF200 Water Bore Hole Drilling Machine 1.200m Depth 2.hydraulic&trailer mounted 3.for complex ... ,Economic,Good performance drill rigs !!! HF200 Water Bore Hole Drilling Machine 1,Drilling depth can reach 30-200m2,Steels quality is good, torque ... pressure0.7MpaWater inlet caliber40mmWater to exit caliber30mmTriangle conveyer beltB1728mm Hard Rock Driller! HF200 Water Bore Hole Drilling Machine