A method for connecting two hollow sections of different cross section

For connecting two hollow chamber profiles (1, 2) of plastic in the miter, the same depths (4, 5), but different widths (6, 7) and which in each case on its inner side (8, 9) a flap (10, 11 ) and the visible surface (12, 13) of said inner side (8, forming 9) and the flap (10, 11) covering wall (14, 15 have), it is proposed a method comprising the steps of: - the hollow-chamber profiles (1, 2) are cut to form a miter angle of 45 ° to the longitudinal extension or cut; - the hollow-chamber profiles (1, 2) are welded together in the miter region (3); - by machining a portion of the corner fused is removed, - the rollover (10, 11) covering wall (14, 15) as a first scarf joint (17) remains and - a part of the visible surface of the other side (outer exposed surfaces 29, 30) forming the wall (outer walls 31, 32) as a further halving (33) overhangs the recessed behind profile region (34); - the milled miter region (3) is covered by an end cap (18). The inventive method is particularly suitable for the production of doors with lock case, in particular so-called back doors, such as those used for cellar, terraces or balconies. In particular, the inventive method for the preparation of Stulpturen, in particular for the so-called. Pedestrian gate, so the first openable wing, is used.