Method of making extruded T- and L-shaped fittings of low-carbon steel for plate radiators

摘要

1. Method of making a fitting (22', 30') with L-shaped passage for connection with a plane surface having a fitting aperture (21') extending in L-shape thereto, a main part thereof (30') being extruded, characterized in that the prepared solid wire (1') of the fitting (30') to be formed with L-shaped passage is precupped unilaterally over a third to half of its length (3) to a remaining volume (12'), that the cupped L-shaped part is placed into a multipart tool surrounding its fitting end in a shape holding and, for the area of the branched off fitting aperture (21'), shaping manner, that the volume of material (12') remained in the terminal area is further displaced until two parallel plane surfaces adjacent the half diameter and a third surface extending rectangularly thereto over the entire diameter as a limiting fitting surface (19') are formed, that a fitting (22') is welded to the fitting surface (19') and subsequently the fitting surface (19') is opened to the inner space (14').