... are available. We specialize in the manufacture of tungsten carbide products such as tungsten carbide strips, rods,rings,inserts, shims,wear parts, ... requirements and our annual output is around 500 tons .The carbide powders are WC, TiC, Cr3C2, VC, TaC, NbC, ... any sizes and high quality products you need. K20 K30 long life tungsten carbide drill bits in tools(customized design) manufaturer selling