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JJ38 Mine Drill Cutting Tools High Stability Coal Mining Picks Hard Rock Drilling Bits

JJ38 Mine Drill Cutting Tools High Stability Coal Mining Picks Hard Rock Drilling Bits

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JJ38 Mine Drill Cutting Tools High Stability Coal Mining Picks Hard Rock Drilling Bits

Parabolic button are widely used as gauge buttons and front buttons of DTH bits,suitable for medium abrasive and hard formations.

Rock DTH drill bits,Tungsten carbide mining drill bits,Overburden drilling bits,Tungsten carbide button,DTH hammer,Coal mining picks

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