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45mm 48mm R32 Rock Retractable Drill Bit Mining Drilling Bits

Retractable Drill Bit
2022-04-13
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#stone drilling bits #spherical drill bit #mining drill bits
Description This type of bit is well known for its wear resistance on soft to medium-hard rock formations (between 55 Mpa to 165 Mpa compressive strength). Featuring spherical tungsten carbide inserts ... View More
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45mm 48mm R32 Rock Retractable Drill Bit Mining Drilling Bits
45mm 48mm R32 Rock Retractable Drill Bit Mining Drilling Bits
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