GQ-15A Drill is a new type of product designed by our factory. The drill is a aligned hydraulic feeding system, so it can drill in the ways by pressuring and displeasuring. It can even load and unload drill tools. Raise and pull down drill frame quickly and conveniently because of the devices driven by cylinders.The drill adopts directs and reverse circulation drilling technology, and drill in quaternary period gravel terrain and hard terrain. This type of drill can be used for big-hole basic pile drilling of high buildings, for water well for industry and agricultural irrigation.