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73-98 PDC Core Drill Bits (Double Rib)
73-98 PDC Core Drill Bits (Double Rib)

73-98 PDC Core Drill Bits (Double Rib)

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Reference table for PDC Core Drill Bits

RockHardness categorySoftMedium-softMediumMedium-hardHardHarderHardest
Drillability level123456789101112
Praetz hardnessF≤1010 < F≤1515 < F≤20
Rock TypeSandstone, Limestone, Marble, Dolomite, Pyrite, Unsturdy Granite, ShaleGranite, Hard Sandstone, Conglomerate, Limestone, Quartz Veins Hard granite, Quartzite, Basalt, Igneous Rock
PDC Core Drill BitsOrdinary type

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Reinforced type

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High-strength type

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