... .Energy consumption is only 7KW. Description:DangShan DS30 hydraulic rock drill is a new generation drilling equipmentsof our factory ,which ... control, low noise,simple,reliable, easy maintenance, flexible and mobile etc. The DS30 is made for general excavations,quarrying and ... use water flushing or air flushing. DS30 is a hydraulic rock drill to drill diameter 32mm(1¼”) to 50mm(2”) holes. Technical ...