DTH Hammers & Bits - Black Diamond Drilling Canada
12 inch Numa125 DTH Hammers and Bits High Air Pressure DTH Bits for Mineral Exploration. Specification of Numa125 DTH Bits: Bit Face Shape of Numa125 DTH Bits: 1. Drop Center Face For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures.
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