DTH Bit shank identification chart QL 60 6 inch flat face DTH down the hole hammer drill bit HIGH AIR PRESSURE BIT(Common Use) DHD3.5 Dia(mm) Gauge button Weight(Kg) Part No. 85 6 x Φ13 4.2 DHD3.5-85 ...View More
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Steel Material DTH Drill Bits QL60 6 Inch For Oil Gas / Water Well API Standard