Flänsa
Flänsa is a Swedish verb used in technical contexts to describe forming or attaching a flange to a component. In mechanical engineering and sheet-metal fabrication, to flänsa a part means to create a flange—an outward extending edge or rim that is used for joining, sealing, or reinforcing parts. Flanging can be achieved by bending the edge of a sheet metal blank to form a raised border, or by attaching a preformed flange via welding, bolting, or riveting. The term is commonly applied in piping, pressure vessels, and mechanical assemblies where flange interfaces provide alignment and a sealing surface. The noun fläns denotes the flange itself, while the related noun flänsning (or the verb form) describes the operation of adding or forming the flange. Etymologically, flänsa derives from fläns (flange), borrowed from the German Flansch, with established usage in Swedish technical language.