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Dth Drill Bits DHD High Air Pressure DTH Hammer Drill Bits

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    2021-5-20 · Down the hole hammers and drill bits are designed together to work in perfect unison, giving high penetration rates, long service life and low costs. 1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to the special inner structure of HD series DTH hammer designed according to newest rock drilling theory.

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