... transfer case, main driving system, gearbox, slurry pump, and rotary table, drill tower and steel wire ropes, etc. are all mounted on ... achieve pneumatic down-the-hole hammer drilling. 2. If equipped with air water separator, dual-wall drill pipe and other related devices ... reverse circulation drilling. 3. If equipped with drill tools like hydraulic down-the-hole hammer, and 850/2A mud pump, the truck ...