Certification & patent

G & Z aluminium systems stands for Quality. We therefore produce entirely CE-accordant.

To enable and guarantee the best quality, we train our staff continuously and develop our system. Succeeded examinations in “certified and authorised expert for aluminium railings, fences and gates” and welding operator examinations form the basis for our quality and security management.

All swing gates and self-supporting sliding gate with Sommer-engines are tested and certified according to gate-norms EN13241.

For inspection, several evidence documents:

Our certification



Zertifikat nach Toreproduktnorm DIN EN 13241-1


Erfolgreich abgelegte Prüfung zum Sachverständigen für Geländer, Zäune und Tore aus Aluminium.

SLV welding technology


Erfolgreich abgelegte Schweißer-Prüfung in:
EN ISO 9606-2 131 P FW 23 ST t10 PD ml
EN ISO 9606-2 131 P FW 23 S t2 PD sl
EN ISO 9606-2 131 P BW 23 S t2 PF ss nb
EN ISO 9606-2 131 P BW 23 S t2 PC ss nb
EN ISO 9606-2 131 P BW 23 S t10 PF ss nb
EN ISO 9606-2 131 P BW 23 S t10 PC ss nb

Sommer (door drive)

Continuously, our staff attend professional training regarding swing- and sliding gates engineering run by the company Sommer.

Auszug aus unseren Patenten


All components and accessories are developed and constructed by us and therefore carefully matched. Unique market innovative concepts and numerus models, designs are patented.