Certificates

We are certified

As a leading distributor, processor and service provider of aluminium and steel in Europe, quality is more than just a company principle to us. Our customers can rely on our products and services. This is also confirmed by the certifications according to the highest requirements, for example of the automotive industry. See for yourself and take a look at the certificates of our locations in the following table.

DE | Duisburg | 
Knauf Interfer SE

Kiffward 34
47138 Duisburg
Germany

Phone +49 203 45669-0
info(at)knauf-interfer.com

Our certificates are available for you to download here:

ISO 9001ISO 14001ISO 50001ISO 45001

You can find all of our Group's certificates here.

Executive Board
Dr Carsten Gast (Chair)
Domenico Marino

We have been awarded the following EcoVadis and CDP ratings for our commitment to sustainability.

Knauf Interfer Cold Rolling GmbH 

EcoVadis-Siegel in Silber für die Knauf Interfer Cold Rolling GmbH im Mai 2026 – verlinkt zur aktuellen Anerkennungsseite auf ecovadis.com.CDP-Badge mit Note B in der Kategorie Klima für das Jahr 2025


Knauf Interfer Galvanising GmbH & Co. KG

Knauf Interfer Stahl Service Center GmbH

Knauf Interfer Aluminium GmbH

Knauf Interfer Galvano GmbH & Co. KG

Siegel für das Nachhaltigkeitsrating EcoVadis in Silber im Januar 2026 der Knauf Interfer Galvano GmbH & Co KG.

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