... carbon steel pipe fittings tee 2.investment casting 3.ISO9001:2008 4.All manufacture up to ur drawings and samples 5.OEM ... needs. FACTORY OVERVIEW MACHINING WORKSHOPPRODUCT LINEService offer1, OEM Casting : 2, Machining: 3, Inspection:4 ... : Grey iron, Ductile iron, Alloy steel , Carbon Steel, Aluminum, Brass,etc2. Standard: ISO 9001 ... business! 2011 Seamless Carbon Steel Pipe Fittings Tee/OEM Castings