Tricone Bit, Drill Bit, PDC Bit manufacturer / supplier in China, offering 12 1/4 Inches Steel Body PDC Bits with 16mm Cutters and 6 Blades, API 7-1 Standard 6-1/8 Inch PDC Bit with 5 Blades for Oil Petroleum Water Mining Rock Well Drilling, Drill Bit for Water Well Drill Bit API 7-1 Drilling-Tools Diamond Bit for Oil Gas Mining Well Drilling and so on.