... rig is a rotary drilling rig with directional circulation, which is equipped with BW900/25 mud pump, It adopts the slurry parameter Drilling depth(M)80300 Drilling ... 6,155,20.2(reverse) Torque of turntable(KN.m)18,10.6,6,3.8,2.5, ... of windlass(KN)30 The lifting capacity of hook(KN)180 Bearing capacity of mast (KN)180 The ... Drill bit DTHDiameter TD50146mm TD80216mm219mm250mmDust device drilling rig