Carbide Rods, Carbide Seats, Carbide Seal Rings manufacturer / supplier in China, offering 3.5mm Diameter Special Shape Tungsten Carbide Nozzles, K30/Yg8 High Wear Resistance Carbide Thread Nozzle for Down-Hole Oilfield Tools, Hip Yg8 Carbide Wear Parts Tungsten Carbide Nozzles for Oil and Gas Application and so on.