A roll former for forming a sheet into a continuous multi-tubular reinforcement beam. The roll former includes a first set of rollers that are configured to bend the sheet to form a common center wall in generally perpendicular orientation relative to first and second lateral portions of the sheet that extend in opposing directions from respective first and second radiused ends of the common center wall. The first set of rollers also form radiused edges on the first and second lateral portions. A second set of rollers is configured to form a channel rib longitudinally along each of the first and second lateral portions. A third set of rollers is configured to bend the first and second lateral portions simultaneously and equally to abut the first and second radiused edges with the respective first and second radiused ends of the common center wall to define adjacent tubes of the beam.