... W-1(W>99.98%), Dia. :17.5mm Length :720-750mm Mainly used to found ingredient of material, cutter and heads, Tungsten ... Rod W-1(W≥99.98%),Purity: W≥99.98%Dia ... found ingredient of material, cutter and heads, conductor of heat,as the material and additive, crankshaft and cylinder barrel of advanced automobile, ingredient ...