... carbide b.our carbide rods suitable for working with gray cast iron, steel alloys and stainless steel etc. Zhuzhou ZZ Hardmetal, which ... , carbide balls, carbide burrs, etc. Along with our company growth, we hope to build business with more companies abroad .We make carbide ... 330mm usually, grade in K10 to K40UF tungsten carbide rods with coolant holes