Top Grade Drill Bit Thread Rock Button Drill Bit For Ore Mining Drilling Tools

Detalles del producto

The Drill Bits are made from grade hard alloy and special steel, generally matched with the light-duty rock drill, to drill the rock hole within diameter of 50mm. The drill tools are used in metallurgy mine, geological exploration, water conservancy construction, electricity, traffic, tunnel, quarry, national defence stone project etc.

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