... solution casting Certificate:ISO9001:20 Product Name: cast iron auto exhaust pipe castingsMaterials: grey iron, ductile iron, malleable ... of Origin: Ningbo, China Software for specification drawings: PDF, Auto CAD, Solid work, JPG, Proe- Standard: ASTM, AISI, ... shop used): numerical control lathe, vertical type CNC machining center, boring machine, universal miller, standing miller, vertical drill ...