Washing sand castings have been popular and simple types used for centuries. Sand casting is used for manufacturing large components, such as gray cast iron, ductile iron, stainless steel, and other types of steel. The main steps include painting, molding, core making, shaping, melting and casting, and cleaning.

Manufacturers of casting sand produce it through processes such as grading, four-level washing, and desliming, resulting in cleaner, round granules. The particle size distribution can be customized according to customer requirements.