Core Drilling Rig, Diamond Core Bit, PDC Bit manufacturer / supplier in China, offering Finedrill Female Thread 4 Blades 1308 Convex Cutter Diameter 6 Inch PDC Bit for Coal Mining & Water Well Drilling, High-Speed PDC Drill Bit Non Core Bits Water Well PDC Drilling Drag Bit with Rapid Penetration, High-Powered 7inch Four Wings Concave PDC Bits PDC Non-Coring Drag Bit for Well Drilling and so on.
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