Full Title

Bending sheet metal along straight lines, e.g. to form simple curves (B21D11/06 - B21D11/18 take precedence; corrugating sheet metal B21D13/00; as edge treatment B21D19/00) > by drawing procedure making use of dies or forming-rollers, e.g. making profiles > making use of forming-rollers (B21D5/12 takes precedence)