METHOD AND HOLLOW PROFILE FOR CONNECTING WITH OTHER PROFILES BY EXPANDING, EDGE-CURLING OR THE LIKE

摘要

1. A method for the production of a hollow section (2) for connection with a second hollow section (1) by coupling or flanging, whereas the first hollow section is deformed and consequently expanded at the section to be connected under maintenance of the wall thickness, characterized in that a constant sinusoidal longitudinal corrugation is formed in a strip section by rolling, the strip section is welded to the first hollow section (2), and is inserted into the bore of the second section (1) and the corrugation of the first hollow section (2) is totally or partially smoothed, wherein the total length of said corrugation (n-I) viewed in cross section corresponds to the circumference (u) of the section in the coupled and flanged-on state.