drill rig
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DTH Bits CIR 110-120
The compressed air is adopted as the driving force. To prevent dust pollution and get a better performance, some high-pressure water may be added into the air for wet rock drilling
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Excavator Drill Rigs WG90
The water-air slagging mechanism relies on the external injection joint to flush the water or gas through the drill tail, drill pipe,drill bit's inner hole or blow air to discharge the impact broken gravel to the hole and assist the impact broken roc
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