Spotting Drills for Aluminum Tungsten Carbide Twist Drill Bits for CNC Cutting Tools The function of the spotting drill: (Pole, the pores, the chamfer...
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ISO9001 54 HRC Rotary Tricone Rock Drill Bit For Rock Layer 1.Material:Tungsten carbide alloy 2.Various hardness available:The most cost-effective tee...
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Piling Tricone Drilling Rock Roller Bits 1. Material:Tungsten carbide alloy 2. Various hardness available:The most cost-effective teeth can be recomme...
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