The casting enterprises in China are mainly distributed in the East, and the casting output is less in the west. From the foundry industrial structure,there is the casting branch or workshop that is subjected to main machine, but also a professional foundry factory and the lots of township foundry factory. As for the scale and level of foundry, there is large foundry factory with advanced technology, high mechanization degree and an annual output of tens of thousands of tons of castings, such as some advanced foundry factories in heavy industry, automobile industry and aviation industry; there are also small foundry factories with backward technology, simple equipment, manual operation and an annual output of hundreds of tons of castings.
In China, the foundry industry is an important industry related to the national economy and the people's livelihood.It is the foundation of the pillar industries such as automobile, petrochemical, steel, electric power, shipbuilding, textile and equipment manufacturing. It is also an important part of the manufacturing industry. In the mechanical equipment, the castings weight is higher proportion of whole machine, the internal combustion engine casting accounts for 80%, the tractor castings account for 50% - 80%, the hydraulic castings and the pump machinery casting account for 50% - 60%. The key parts for the automobile are almost made by casting. The major equipments, such as metallurgy, mines and power stations, all depend on large casting. The casting quality directly affects the quality and performance of the whole machine.