... :iron(ductile iron ,steel , aluminum also available)2process:forging process,CNC machining3smooth surface productDalian wills machine specialized in valve and ... Service offer:casting,forging ,machining,stamping.5.The material available:iron ,stainless steel,aluminum,brass...6.casting process:sand casting ... taiping industrial zone,Pulandian,dalian,China. new precision forging part with smooth surface