fiberglass cover molding1.Material:S50C,2738,H13,S136 2.Cavity Qty: ... .Base:LKM We are specialized in designing and making fiberglass cover molding Product Name fiberglass cover moldingCore & Cavity Steel S50C(45#),40Cr,P20H ... ,718H,2738,5CrNiMo,38CrMoAC,H13,S136HSteel hardness HRC 28--50Molding Way Compresion molding ...