Zgyx-415 Crawler Surface DTH Drilling Rig for Quarry Zhejiang Zhongnuo Intelligent Machinery Co., Ltd. Base Info Description Model NoDiesel Engine Model and PowerZGYX-41550Kw YCD4R12T-70ZGYX-415-159Kw YCD4R22T-80 Pre：Pneumatic Crawler Integrated Open-Air Monolithic Drilling Rig Next：Energy-Efficient Crawler Surface DTH Drilling Rig for Rock
