Perforazione per la roccia a martello H22 7 gradi per la perforazione a punta per il tunnelamento minerario

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April 16, 2025
Video Description:
Discover the Top Hammer Rock Drill H22 7 Degree Taper Drill Rod, designed for mining tunneling and construction. Made from hexagonal hollow alloy steel, this drill rod ensures durability and precision in tough environments. Perfect for mine tunnel support, rock drilling, and bridge excavation.