... 3.High efficiency 4.Small weight and volume water well drill rigs for sale Technical Parameter Drilling depth60-80mDrilling diameter70-300mmPower Engine7 ... the first generation product for 13 years now, more than 4,000 wells eyes, in addition to drill, but almost no repairation ... carbide, (apart from the more hard rock can drill through the thick; 5. Drill deep, with booster, reduce labor intensity; 6. ...