Hot rolling mills are industrial facilities where metal is processed at high temperatures to shape it into desired forms. The process involves heating metal slabs or billets until they become malleable, allowing them to be rolled into thinner sheets, plates, or other shapes. This method improves the metal's mechanical properties and reduces its thickness efficiently. In a hot rolling mill, large rollers apply pressure to the heated metal, transforming it as it passes through. The equipment used includes rollers, furnaces, and cooling systems, which work together to ensure the metal is shaped accurately and cooled properly after processing.