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High Air Pressure Down-the-hole rock drilling bits Mission60 QL6 DHD360 SD6 COP64

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  • DRILL PRESS SPEED CHART - Meredith Corporation

    In DTH drilling, the rock drilling bit is a continuation of the shank, which the rock drill piston strikes directly. Since the piston is in direct contact with the drill bit, little energy is lost. This gives DTH drilling a nearly constant penetration rate regardless of hole length. Competitive Advantage: • High grade tungsten carbide inserts ...

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