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 20:17
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Chain link fences, while not as imposing, can be enhanced with privacy slats or razor wire to improve their security capabilities Chain link fences, while not as imposing, can be enhanced with privacy slats or razor wire to improve their security capabilities
Compared to other fencing materials like wood or brick, chain link is generally more cost-effective, making it a budget-friendly option without compromising on durability Compared to other fencing materials like wood or brick, chain link is generally more cost-effective, making it a budget-friendly option without compromising on durability
This low-maintenance aspect makes it an economical choice in the long run, adding value to your property without demanding much in return This low-maintenance aspect makes it an economical choice in the long run, adding value to your property without demanding much in return
They can be quickly and easily attached to posts using various fastening methods, such as clamps or brackets They can be quickly and easily attached to posts using various fastening methods, such as clamps or brackets