... , water conservancy and hydropower, tunnel, well, industrial and civil construction, geological exploration, large diameter boring pile and small diameter diamond core deep ... and down the tower, all work are performed by the hydraulic system. ModelHGY-1500Drilling Depth (m)1200-1500Drilling Rod Diameter ... , 415,570,808,1081Reverse: 58,152Spindle Hole Diameter (mm)Φ95Spindle Output Torque(N.M)5200 or ...