In 2002, Wilhelm Modersohn became aware of the SAF2304 (1.4362) material through Avesta in Sweden. In 2003 Modersohn introduced the first Lean Duplex steel for system products in the German market for fastening systems.
As an independent representative of fastening systems from the company Lutz from Wertheim, Wilhelm Modersohn sen. had recognised early on that there was a great demand in the market for fastenings in the area of masonry facades. In March 1970, he and two employees founded the company, which today has over 140 employees.
In the field of joining and welding technology, valid proof of suitability which must be regularly renewed in the company by external inspectors (most of them by employees of a welding training and testing institute [SLV]).
It is important that masonry walls are connected to each other in a non-positive way, e.g. when inner walls of masonry meet load-bearing outer walls, and then even very different types of masonry meet.
General generic term for all supports and properties that are designed according to a basic principle to connect building structures with each other. The fastening system does not always have to be a separate component.