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 | Werl | (Plant 2)
Knauf Interfer Aluminium GmbH

Werl 2 Plant
Am Grüggelgraben 8
59457 Werl
Germany
Phone +49 2922 8709-0
Fax +49 2922 8709-208


Our company has fulfilled the TISAX® requirements.
TISAX® is a registered trademark of the ENX Association. Our assessment results can only be accessed via the ENX portal.

Our certificates are available for you to download here:

ISO 9001IATF 16949ISO 14001ISO 45001ISO 50001TISAX

We have been awarded the EcoVadis Silver Rating for our commitment to sustainability.

EcoVadis silver badge for Knauf Interfer Aluminium GmbH in January 2026 – linked to the current recognition page at ecovadis.com.

Managing Directors
Guido Rickfelder
Paul Schaab

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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