API Rock Bit 8-1/2 Inch PDC Drill Bit Of Oilfeild Diamond Drilling Tool 1 . Descriptions: A PDC Drill bit is a Polycrystalline Diamond Compact fixed o...
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...centrifugally cast with bi-metallic liners of Nickel-Boron or . Rupture disc and pressure transducer holes are pre-drilled at the f...
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Extrusion tips and dies are widely used in the process of coating protection and insulating skin for wires and cables. . Core of tip dies: Tungston ca...
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