The KT15C integrated down the hole drill rig for open use can drilling vertical, indlined and horizontal holes, mainly used for open-pit minestonework blast holes and pre-splitting holes. It is driven by the Cummins China stage Ill diesel engine and the two-terminal output candrive the screw compression system and hydraulic transmission system. The drill rig is equipped with high strength aluminum alloy propulsion beam, variable hydraulic system, automatic rod handling system, drill pipe floating joint module, drill pipe lubrication module, drillpipe sticking prevention system, hydraulic dry dust collection system, air conditioning cab, optional drilling angle and depth indicationlfunction, etc. The drill rig is characterized by excellent integrity, high automation, efficient drilling, environment-friendliness, energy conservation, simple operation, flexibility and travelling safety, etc.