New arrival 50KW dth drill rig Hengwang borehole drilling machine tunnel drilling rig price Model Number:HW935 Accepted Payment Type: null

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New arrival 50KW dth drill rig Hengwang borehole drilling machine tunnel drilling rig price Model Number:HW935 Accepted Payment Type: nullNew arrival 50KW dth drill rig Hengwang borehole drilling machine tunnel drilling rig price Product Description Click to get the latest price HW916 916 1 Separated DTH Surface Drill Rig is equipped with dual motor rotary head and rotary speed adjustable mull, way valve. The rotary torque can reach 1950N m, which meets the requirements of 76 drill pipe and 130 hole diameter. The rotation speedcan be up to 150 rpm, which meets the needs of some