Fastener is the general name of a series of mechanical parts used to fasten and connect more than two parts (or components) into a whole. Fasteners are characterized by a wide range of varieties and specifications, different performance and uses, and a high degree of standardization, serialization and generalization. Among them, standard products have a strong universality, while non-standard products are generally used in specific fields and for specific purposes.
Fasteners are widely used in various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, instruments and other products. The demand for downstream applications is on the rise, which is conducive to the stable development of the fastener industry. The technical progress and industrial upgrading of the main application industries and the further improvement of the requirements for fastener performance and quality will promote the technical progress of the fastener industry and improve the quality of fastener products. In 2021, the domestic output of metal fasteners will be 7.09 million tons, with a year-on-year growth of 12.4%; The sales revenue of domestic fasteners was 122.5 billion yuan, up 1.1% year on year.