Abstract: An improved roll former for imparting a predetermined symmetrical curve to an advancing elongated metal strip in a tube mill. The roll former includes two identical rollers, each having a contoured surface for contacting and shaping one half of the metal strip. Each roller is mounted on a shaft which extends substantially perpendicular to a form radius in a central region of the section being formed by such roller. The shafts are mounted for simultaneous pivotal adjustment in both the same direction about a point and in opposite directions about such point to compensate for camber in the strip and to receive different sized rollers.