hydraulic water well drilling rig 1)hydraulic machine,easy to operate, 2)strong torque,high drilling efficency 3)trailer type CJW130 hydraulic water well drilling rig Application scope 1,Used for general investigation, geophysical exploration, high-way and building construction, and blast-hole drilling etc. 2,With hydro-automatic feeding device, and high drilling efficiency. 3,Designed with hydro ...