260m Depth Rock Drilling Machine Air DTH Bore Hole HOWO 6*4 Truck Mounted Water Well Drilling Rig Zhejiang Huawei Machinery Co., Ltd. Base Info Description Pre：Crawler Borehole Mining Pneumatic DTH Water Well Drilling Rig Prices for Sale Next：Slurry Balance Pipe Jacking Machine ID2000, Tunnel Boring Machine, Epb Pipe Jacking Machine
