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Product detail Land Geotechnical Rotary Drilling Rigs Machine      ZDD100a series geotechnical drilling rig is a new model drill, we developed it specially used for stone quarry and the drill hole,can be different diameter,depth,mylti-orientation and angle.Now it is the indispensable products for mine quarrying stone dynamiting and paving road. Advantages of Down the Hole Hammer Drill Rig  1. Powerful and reliable engine  2. Powerful feeding and rotating system  3. New drilling boom  4. High power drive motors  5. Safe and stable travelling system Photo of productÂ
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