We can supply the drilling rigs for subway,high-rise building ,air port and the deep foundations etc. Drilling Rig Model DR35ASpecificationsModelDR35Suitable Rock Rigidityf6-20Bore Dia.mm80-115Bore Depth.m≤25(economic depth)Pushing Lengthmm2000Rotation Speedrpm0-65Working Air PressureMpa0.5-0.7bar5-7Air Consumptionm3/min13Diesel Engine PowerHp25Max. Pushing ForceN15000Traveling SpeedKm/h2Max. ...