Tricone Bit, Drill Bit, PDC Bit manufacturer / supplier in China, offering Manufacturer Sale 8 1/2 Inches (215.9mm) 5 Blades PDC Drill Bits for Well Drilling, First-Class Customizable 16′′ Diamond PDC Bits with 6 Blades for Water Wells, Exceptional Custom 8 1/2′′ PDC Bits with 3 Blades for Oil Well Drilling and so on.
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