Ring rolling (also known as ring rolling, ring rolling, reaming, ring rolling) is a plastic processing technology that uses a ring rolling machine (also known as ring rolling machine, ring rolling machine, hinge ring machine) to manufacture plastics. This process is suitable for producing annular mechanical parts of various shapes and sizes, such as bearing rings, ring gears, flanges, wheel hubs, thin-walled cylindrical parts, wind power flanges, high-neck flanges and other seamless annular forgings.