Perforación de roca de martillo superior H22 7 grados de broca cónica para la extracción de túneles

Gracia
April 16, 2025
Keyword: Barra cónica
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.