... heavy truck 8x6 special vehicle. The transfer case, main drive system, gear box, double-winch, mud pump, turntable, drill tower, feeding ... in the mud rock, weathered rock, bed rock. Using reverse& directional water tap,182X182X4.5M driving drill pipe and 168×8×3M ... drilling tower are hydraulic controlled. Transfer case, mud pump clutch system are air operated. The appearance of rig is pretty, it ...