... , transmission power, gearbox, sets of windlass, mud pump, sewage pump,mast are set up on the chassis.This ... is equipped with BW850/2A mud pump, It adopts the slurry as the washing fluid, it can drill on ... high efficiency when the rig drill on mud rock and weathering formation through using the ... mast are hydraulic operated. Distribute box, sewage pump, master driving clutch system are air operated.The ...