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 | Barsinghausen |
Knauf Interfer Stahl Service Center GmbH

Delta Stahl Plant
Reihekamp 4
30890 Barsinghausen
Germany

The processing specialist for refined surfaces


Performance and product range:

  • Surface refined, cold and hot rolled
  • Plates
  • Slit strip
  • Small coils and wound coils
  • Extensive raw material stock

Her you will find an overview of the services and product range of the Steel Service Centers.

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 16247-1

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

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

Your contact person:

Plant Manager
Robin Kaiser
T +49 5105 5248-330

Managing Directors
Domenico Marino
Fabian Messler
Thomas Niederhofer

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

Knauf Interfer Cold Rolling GmbH 

Siegel für das Nachhaltigkeitsrating EcoVadis in Bronze im April 2025 für die Knauf Interfer Cold Rolling GmbH.  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.

Contact

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your enquiry.