... the projects e.g. prospection, railway, road, port, bridge, water conservancy and hydropower, tunnel, well, industrial and civil construction2. ... mining exploration, Ore exploration3. Small hole diameter water well drilling4. Geothermal pipe-installing for heat pump5. Small-diameter hole foundation piling ... of gravity and good stability. HGY200D Core Drilling Rig for 200M,also for Water Well & Geology