It is a kind of machine that manufactures steel (metal) products. Custom roll forming machine is the roll former for industrial application, instead of daily purposes. A regular roll former produces steel building materials, while custom roll forming machine works for something else.
It is a kind of machine for manufacturing steel (metal) roofing sheet rolls metal mainly used in construction and manufacturing industries for roofing sheets. roll forming machine are mostly used in construction and roofing of giant structures, building and skyscrapers.