... high-standard technician team 3)OEM service Ductile iron castings1.Material:Gray iron or Ductile Iron2.Standard:DIN,ASTM,BS, ... ,CNC,Lathe,Milling Machine,drilling etc.6.Surface treatment:painting,polishing,heat treatment,plaining or galvanization etc.5.Size ... resin-sand casting production line annual production capacity 20000 Ton grey iron and ductile iroAutomatic moulding line from German company HWS ...