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professional Wet Diamond Core Drill Bits for drilling reinforced concrete Specifications: Our drill rods are all manufactured by CNC machines. They're made of high quality alloy steel with heat-treated. 1. high ... Read More
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Polycrystalline NQ HQ PQ ROD Rate Surface Set Diamond Core Bit For Sandstone Drilling PDC Drill Bit For Sandstone Drilling 1.New Superhard Material; 2.High Drilling Rate; 3.Wearable Blade; 4.Used For Coal Mine ... Read More
