The present invention relates to a bumper beam comprising a U-shaped elongate beam, which elongate beam is provided with attachment points for attachment to a vehicle and further comprises patches arranged on the webs of the beam, preferably in the area of the attachment points, wherein said patches are provided with initiators configured to initiate deformation of the beam upon impact.

A multi-tubular beam for a vehicle, such as a vehicle structure or a bumper reinforcement, includes an elongated beam formed with a metal sheet. The metal sheet has a central section and outer sections extending along a length of the metal sheet. The outer sections are disposed in opposing directions from the outer edges of the central section to provide adjacent first and second tubular portions. The central section forms a common center wall between the adjacent first and second tubular portions. A first edge portion of the metal sheet is disposed along and in parallel alignment with the center wall. The first edge portion is attached to the center wall at a first weld joint to form the first tubular portion. The first weld joint includes a weld material that extends through a thickness of the center wall and into a thickness of the first edge portion.

The present disclosure relates to methods for manufacturing a unitary a bumper beam assembly of a vehicle. The method comprises providing a plurality of blanks, joining the blanks to each other to form a combined blank, and deforming the combined blank to form the unitary bumper beam assembly. The unitary bumper beam assembly includes a bumper beam, a pedestrian beam and at least one bracket connecting the bumper beam to the pedestrian beam. The plurality of blanks comprises a bumper beam blank and a pedestrian beam blank, and joining the blanks comprises forming one or more overlapping regions formed by partially overlapping the blanks with each other. The present disclosure further relates to unitary bumper beam assemblies obtainable by such methods.