Dec 28, 2012
KY-310A Blast hole drill rig
1,Suitable for large size open pit mine
2,iron ore,copper,gold,coal,hydraulic power plant,etc.
KY-310A Drilling Rig (tircone bit)ParameterSpecificationsBorehole dia (mm)310Hole depth (m)18Hole direction (degree)90Rock Hardness coefficiencyf=5~20Shaft...