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12 Degree Broca 38mm 8 Buttons Rock Drilling Bits For Mining Drilling Blasting

Serena
Apr 27, 2025
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11 Degree Broca 34mm 7 Buttons Taper Drill Bit for Mining Drilling Blasting Product information: The rock drilling bits are manufactured from high-grade hard alloy and special steel. They are typically used with light-duty rock drills for drilling rock holes with a diameter of up to 50 mm. These drilling tools are widely applied in fields including metallurgical mines, geological exploration, water conservancy construction, electric power, transportation, tunnels, quarries,
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