CIR70 CIR90 CIR110 CIR150 Low Air Pressure Down The Hole ...
CIR70 CIR90 CIR110 CIR150 Low Air Pressure Down The Hole DTH Hammer for Stone Quarry Drilling Bulroc Br1 Br2 Br3 and 3inch Medium Air Pressure Down The Hole DTH Drill Hammer DTH drilling is a percussion system driving a piston inside hammer body with up and down motion by compressed air and transmitting an intensive percussion energy to the bit ...
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