... , feed mechanism are set up on the chassis.The rig is a rotary drilling rig with directional circulation, it’s equipped with WB850/4 ... mountedwater well drilling rigDrilling depth(m)600Drilling diameter(mm)500Turntable Speed(r/min)117,102,60,38,22,13,16 reverseTorque(kN/m)5 ... .4-5.Single rope lifting capacity of main windlass(kn)50Max lifting capacity of main ...