The sand casting, a popular and simple type, has been used for centuries in washing sand. Sand mold casting is used for processes such as manufacturing large components, including gray cast iron, ductile iron, stainless steel, and other types of steel. The main steps include painting, molding, core making, shaping, melting and pouring, and cleaning.

The foundry sand manufacturer processes the sand through grading, four-level washing, and de-sliming, resulting in relatively clean, round granules. The particle size distribution can be customized according to customer requirements.