Assembly of hollow profiles

Aluminium profiles can be assembled in a practically invisible way by means of expansion plugs made from a stack of Diaphragm plates.

Reasons to switch to “Diaphragm” Profile assembly

  1. It is esthetical and invisible
  2. The plug is easily adapted to any profile section
  3. The profile assembly can be done on the spot, no need anymore to transport large welded assemblies

Principle: A plug is made of a stack of Diaphragm plates. These plates fit the alumimium profile and have a slightly eccentric hole. The plates are stacked opposing the eccentric holes such that their apertures slightly overlap. An inner cone is pressed in place to expand the plug and make it grip into the inner wall of the profile.

A threaded hole in the cone allows to bolt any object to the end of the profile (here a T-connection)

Interested in Assembly of hollow profiles

Use this field to get the information leaflet

Diaphragm Profile Joints


T-fixation of aluminium profiles


The fixation of the rungs of a ladder


Fixation of the corners of a rectangular frame

Please subscribe for our newsletter