Drill Rig, PDC Bits, Tricone Bits manufacturer / supplier in China, offering Cutting Tool 180mm PDC Drag Bit 1308 PDC Cutters 3 Wings PDC Bit for Water Well Drilling, Hmlc Ntw Nmlc Btw Nw Hw Hq Nq Pq Exploration Bits Hot Press Bits Diamond Coring Bits, 10 1/4 Tungsten Carbide Steel Teeth Petroleum Diamond Roller Bits and so on.