Portable water well drilling rig : 1.Easy handle ,small manpower 2.More economic,easy move 3.High efficiency 4.Hydraulic dri Portable water well drilling rig AKL-L-180 Features:(1)AKL-L-180 is a kind of portable hydraulic drilling rig with low speed and a big torque;(2)This machine is abroadly used in constructions of railway, water well, transportation, bridge, dam and so on.(3)In core drilling ...