... strong torque,high drilling efficency 3)trailer type CJW130 hydraulic water well drilling rig Application scope 1,Used for general investigation, geophysical exploration ... safe and reliable operations. 5, Compact in structure. All the drill, water pump and diesel engine installed on one base frame result ... beltB1575mm most salable and inexpensive in 2011 CJW130 Hydraulic water well drilling rig