... the projects e.g. prospection, railway, road, port, bridge, water conservancy and hydropower, tunnel, well, industrial and civil construction2. ... Coal mining exploration, Ore exploration3. Small hole diameter water well drilling4. Geothermal pipe-installing for heat pump5. Small- ... ×900×1600Diesel engine495D(26.5KW)ElectromotorY180L-4(22KW) water well drilling rig (KDY-300Y 300M depth)