2000mm Underground Pipelines Rock Tunnel Boring Pipe Jacking Drilling Machine for City Utility Tunnel Hangzhou Supu Business Machine Co., Ltd. Base Info Description Pre：1500mm Trenchless Automatic No Dig Tunneling Boring Concrete Compound Slurry Balance Pipe Jacking Machine for Rcp Next：1800mm No Dig High Speed Hydraulic Rock Pipe Jacking Machine/Micro Tunnel Boring Drilling Machinery (MTBM) for Pipeline
