Pneumatic and Hydraulic DTH Drilling Equipment with Dust Collector Zhejiang Zhongnuo Intelligent Machinery Co., Ltd. Base Info Description Model NoDiesel Engine Model and PowerZGYX-41550Kw YCD4R12T-70ZGYX-415-159Kw YCD4R22T-80 Pre：Pneumatic Hydraulic DTH Crawler Rock Drilling Rig for Mining Next：Borehole Crawler Hydraulic DTH Water Well Drilling Rig with Compressor
