... drilling rig2,Hydraulic DTH drilling rig3,Integrated DTH drilling rig4,Truck mounted water well DTH drilling rig5,Crawler water well DTH ... drilling rigLow gravity, great ground clearance, make cars easily make drill through rugged road. High-power motor drive and strong climbing ... novelty structure and adjust easy, make the drill hole scope larger and also can drill low level hole 4,Powerful feeding and ...