1.Composition:Fe,W,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 molybdenu, Mo Oxide and also ferro tungsten alloy.1.Properties: Wolfram is one of the important alloy elements which are used to make special steel. While Wolfram reduce a little elongation rate of steel, it raises strength ...