Light Weight Hydraulic Down-The-Hole Drill Rig Rock Drilling Rig Kunshan Hexin Precise Machinery Co., Ltd. Base Info Description Rotate Speed (r/Min)3600 Pre：Split Type Crwler Down-The-Hole Drill Rig Blasting Hole Drilling Rig Next：Crawler Air Type Hydraulic Water Well Drilling Machine Deep Wells Drilling Rig
