Forro de pedra de martelo superior H22 7 graus de barra de perfuração cónica para túnel de mineração

Graça
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.