... 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 ... hole and blast hole Main technology parameters: Drill depth (m)180,150,120,90,70,30Drilling diameter75,91,110,130,150 ... r/min)1460 Portable water well drilling rig AKL-L-180