... on ASTM ISO 9001 2000 certificate High purity and density Better quality and competitive price Wolfram Rod, Wo Rod on ASTMDensity ... making electrode, electrode tube elements, lead out wire, holder and heating elements of fumace, eletcrode fir fire nekting rare- ... -resistent steel, mainly used to guns, artillery,rockets, satellite,airplanes and ships. High purity wolfram Rod Specification(%) Main Comp.W ...