Patent ID: 7343678

Claim:
A method for production of a hollow section, comprising deep drawing sheet to form an unwound pre-shape of the hollow section, said pre-shape having a center piece and two half-connectors connected to each end of said center piece through a transition part, each of said two half-connectors having a cap, trimming excess material including the caps of the half-connectors, pre-bending said center piece of said pre-shape, embossing at least one secondary shaped element ( 35 ) in a pre-bent region of the pre-shape, said secondary shaped element ( 35 ) adapted for joining to another component, bending the pre-bent pre-shape into a final wound shape of the hollow section, forming contact regions where edges, lying beneath each other, of the hollow section contact, joining the edges of the hollow section to each other in a peripheral direction in the contact region.