Freezing Borehole Drilling Rig T6D The T6D drilling rig tunnels, with a number of patents, is mainly used for soil freezing hole drilling in corridor ...
Soil Freezing Drilling Machine T6D The T6D drilling rig tunnels, with a number of patents, is mainly used for soil freezing hole drilling in corridor ...
Four-Wheel Hydraulic Driven Soil Freezing Drill Rig T6D The T6D drilling rig tunnels, with a number of patents, is mainly used for soil freezing hole ...