... 2.Economic drilling 3.High efficiency Hydraulic rock drill: 1. DT-60 drilling machine adopts advanced reverse circulation technology,drilling ... one hour, easy transportation, easy to disassemble the machine,. 3. Assembled just need only a few minutes, ... properties. Main structure: host, tower, square bars, drill pipe, drill bits, mud pumps. Technical Parameter: Drilling diameter85mm—600mmDrilling ...