... through DTH drilling, high speed High Speed Track Mounted All hydraulic Water Well Drilling RigModel No. WDH-500.WDH-500 ... traveling, rotating, driving, feeding, rod loosing, lifting units and hydraulic legs, winches, mud pumps all hydraulically controlled/driven. This allows ... works with high efficiency, ease and conveniences. With the support of Medium or High Pressure Air Compressor, the WDH-500RC ...