Reverse circulation drilling rigs utilize dual-wall drill pipes for efficient sample recovery. The XHRC500 model drills to 500 meters with hole diameters from 105-400 mm, adapting to large-diameter well construction needs. The air-lift reverse circulation system reduces contamination while improving penetration rates in unconsolidated strata. These reverse circulation drilling equipments are particularly effective for mineral exploration, aquifer mapping, and large-scale water well projects. Looking for reverse circulation drilling rig manufacturers? Call Xinhao Drilling Rig!