1.Downhole drilling machine: When drilling a downhole gun hole with a aperture less than 150 mm, in addition to the application of a rock drill, it can also be used to drill a small diameter of 80 ~ 150 mm. When drilling a gun hole with a diameter of less than 70 mm in coal or softer mineral rock, it is generally used to drill or air drill, driven by a motor (or air motor) to drill the drill pipe, and the rock (coal) chips drilled out are discharged through the spiral groove on the drill pipe.
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2025-08-14 06:27
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These materials ensure the sleeves can withstand the high pressure and harsh environments prevalent in hydraulic systems These materials ensure the sleeves can withstand the high pressure and harsh environments prevalent in hydraulic systems
With the option to add or remove extension rods based on the drilling requirements, they offer versatility in various terrains and job sites With the option to add or remove extension rods based on the drilling requirements, they offer versatility in various terrains and job sites
The sharpness of the carbide tips allows for clean and precise drilling, resulting in accurate holes that require minimal finishing work The sharpness of the carbide tips allows for clean and precise drilling, resulting in accurate holes that require minimal finishing work
