... , main drive system, gear box, double-winch, mud pump, turntable, drill tower, feeding tools are all on the ... circulation by pneumatic clutch switch. The sand pump and clean water pump is driven by a special transfer case. ... drilling tower are hydraulic controlled. Transfer case, mud pump clutch system are air operated. The appearance of rig ... drill pipe (mm) (mm)D168×8×3000 multi-function drilling rig