Parts with constant thickness during machining correspond to castings, forgings and machined parts. For example, the iron shell outside the car is sheet metal, and some cabinets made of stainless steel are also sheet metal.
Metal sheet is sometimes called metal sheet, which comes from English platemetal. In general, some metal plates are plastically deformed by manual or die stamping to form the required shape and size, and further more complex parts can be formed by welding or a small amount of mechanical processing, such as chimneys, tin furnaces and automobile shells commonly used in families.