Sheet metal rolling machines are industrial tools used to shape and form metal sheets into curved or cylindrical shapes. They work by passing flat metal sheets through rollers that apply pressure, bending the material into the desired radius. These machines are essential in various industries, including construction, automotive, and manufacturing. There are different types of sheet metal rolling machines, such as three-roll and four-roll machines, each designed for specific applications. Operators can adjust the rollers to achieve various thicknesses and diameters, making these machines versatile for producing components like pipes, tanks, and other rounded structures.