... C,P,S,Si,Mn,Cu,As,Bi,Pb,Sb,Sn 2.ferro tungsten 3.Size range:10- ... 130mm 4.To make special steel We are a manufacture of ferro alloy in China. We produce ferro ... of steel.2. Below is the specification of ferro tungsten: GradeChemical Composition % WCPSSiMnCuAsBiPbSbSn≤FeW80-A75-850 ... .13. Shape:FERRO TUNGSTEN 70 should be delivered in lump4. Size:Its size range is from 10 ...