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Rotary Blast Hole Drilling Rig
   Rotary Blast Hole Drilling Rig
 Model  Drilling Diameter  Drilling Depth  Diesel Engine  Air Compressor
 DR400  351-406 mm  Single pole 19.8m/several pole 40 m  QSK45 1500HP@1900  107m3/min@1.4 MPa
 DR370  269-351 mm  Single pole 19.8m/several pole 40 m  QSK45 1200HP@1900  84.9m3/min@0.75 MPa
 DR310  251-311 mm  Single pole 19.8m/several pole 40 m  QSK23 950HP@1800  74.6m3@0.76 MPa
 DR270  193-269 mm  Single pole 19.8m/several pole 40 m  QSK19 755HP@2100  53.8m3/min@0.75 MPa
 
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