... supply 200 and 300 crawler hydraulic well drilling 300 crawler hydraulic well drilling is a light, efficient, ... stability, reduce the throttle loss.8,with demolition and installation tools of the drilling machines, easy to operate, ... pump and other equipmentTechnical parameterTermsUnitValueDrilling rig diametermm101~254Drilling well depthm315Wind pressureMPa1.05~2.46Air consumptionm3/min16~30Rotary ...