Plug fit system has parts consisting of corrugated flat material bent into U-profile with arms on both sides of base; arms of one plug fit part rest on arms of another plug fit part

摘要

The system has one or more plug fit parts (1a,1b) consisting of a flat material that is bent into a U-profile especially with a flat base (2) and arms on both sides of the flat base. The arms (3a,3b) of one plug fit part rest on the arms of another plug fit part so as to at least partly overlap them and the flat material is corrugated with corrugations (4b) extending along or transverse to the profile axis.