This rig is a rotary drilling rig with directional circulation, which is equipped with BW900/25 mud pump, It adopts the slurry parameter Drilling depth ... )80300 Drilling diameter(mm)1500500 Speed of turntable(r/min)21.2,36,63.2,100.6,155,20.2(reverse) Torque ... )18,10.6,6,3.8,2.5,18.9(reverse) Single rope lifting capacity of windlass(KN)30 The lifting ...