... , grey iron, ductile cast iron and so on3.Process: wax injection, wax welding, dipping, sand-coating, shell-making, dewaxing, cleaning ... grey iron, ductile cast iron and so on3.Process: wax injection, wax welding, dipping, sand-coating, shell-making, dewaxing, cleaning ... can turn out 800 tons of products per month. We use advanced manufacturing equipment for precision casting, automatic stove heating ...