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Crawler Down The Hole Drilling Rigs“Zuanshan” brand crawler drill series products are special designed drilling equipment which can be widely used to drill deep holes in many areas such as quarry, railway construction, road construction, small-medium mine and so on. Used compressed air as power and equiped with hammer the crawler drill can drill blast holes, break holes, anchoring holes in different directions.Rock hardness: 4-20Hole Diameter: 90-165mmHole Depth: 0-180mWorking Air Pressure:0.5-0.4MPa
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