quality management

Certifications, approvals and manufacturer qualifications


Stahlkontor has established a stringent and comprehensive quality management system which ensures the reliability of all processes from inquiries all the way through to delivery of the finished product. A large number of further process approvals also enable us to meet highest customer demands.


 Quality management system


The quality management system of Stahlkontor GmbH & Co. KG is certified on the basis of DIN EN 9100. DIN EN 9100 contains all the requirements of DIN EN ISO 9001 and places further requirements on the organizations of the aviation, aerospace and defence industries. In addition, our quality management system also covers the requirements of AQAP 2120 and AQAP 2130.



Certificates and qualifications in welding technology


Welding technology at STAHLKONTOR GmbH & Co. KG is also certified extensively in accordance with the following standards:

  • DIN EN ISO 3834-2: „Qualitätsanforderungen für das Schmelzschweißen metallischer Werkstoffe – Teil 2: Umfassende Qualitätsanforderungen“
  • DIN 2303 Q2 BK1: „Schweißen und verwandte Prozesse – Qualitätsanforderungen an Herstell- und Instandsetzungsbetriebe für wehrtechnische Produkte“  – Herstellerqualifikationsstufe Q2 für wehrtechnische Produkte mit besonderen Anforderungen, Bauteilklasse 1
  • DIN  2303 Q3 BK1: „Schweißen und verwandte Prozesse – Qualitätsanforderungen an Herstell- und  Instandsetzungsbetriebe für wehrtechnische Produkte“ – Herstellerqualifikationsstufe Q3 für wehrtechnische Produkte mit Panzerungsfunktion, Bauteilklasse 1
  • DIN EN 15085-2 CL1: „Bahnanwendungen – Schweißen von Schienenfahrzeugen und -fahrzeugteilen“ – Certification Level 1
  • DIN EN 1090-2 EXC 3: „Ausführung von Stahltragwerken“ – Execution Class 3
  • DIN EN 1090-3 EXC 3: „Ausführung von Aluminiumtragwerken“ – Execution Class 3


Approval for processing of components made of armoring materials

  • Herstellerqualifikation zum Kaltverformen von Panzerungsmaterial nach TL 2350-0003 (Manufacturer’s Qualification for Cold Forming of Armoring Materials pursuant to TL 2350-0003)
  • Herstellerqualifikation zum Laser- und Wasserstrahlschneiden von Panzerungsmaterial nach TL 2350-0000(Manufacturer’s Qualification for Laser and Water-jet Cutting of Armoring Materials pursuant to TL 2350-0000)


Further qualifications and customer-specific process approvals on request


Quality requirements on external suppliers and service providers


STAHLKONTOR GmbH & Co. KG places great deal of emphasis on a partnership-based cooperation with external suppliers in a large number of areas. The respective latest update versions of the general quality requirements for external suppliers and service providers as a standard for the mutual qualitative cooperation are available in the download area. 


Energy Management System DIN EN ISO 50001

Stahlkontor has installed and certified an energy management system in accordance with DIN EN ISO 50001 in order to increase energy efficiency continuously and systematically. This is a contribution to an environmentally friendly and sustainable production.