... or sample 4.ISO9001:2008 5.Carbon steel ductile iron seamless pipe fittings casting partCompany introductionDalian Wills Machine Co. ... Inspection:4, Raw Material ExportCasting:1. Casting Material: Grey iron, Ductile iron, Alloy steel , Carbon Steel, Aluminum, Brass,etc2. Standard ... casting,forging,etc.7.Casting Process:Client Drawing--Mould Sampling--Casting--Rough Machining--HT--Mechanical testing--- ...