... operate 4.Small volum and light weight 5. drilling different geology Wells Rig Description: This machine ... mainly used for water well drilling, drilling diameter is 70-150mm and drilling depth is 30-100m. It ... like farmhouse or factory and so on, the drilling diameter can reach 500mm and depth can be ... hard, inlaid carbide, (apart from the more hard rock can drill through the thick; 3. Drill deep, ...