Split Type Crwler Down-The-Hole Drill Rig Blasting Hole Drilling Rig Kunshan Hexin Precise Machinery Co., Ltd. Base Info Description Rotate Speed (r/Min)3600 Pre：Mine Drill Rig Yn27c Pionjar120 Gasoline Rock Drill Machine with 32-42mm Drill Bits Next：Light Weight Hydraulic Down-The-Hole Drill Rig Rock Drilling Rig
