+49 (0) 63 25 - 95 469 - 0 info@heiza-werkstaetten.de

Affiliated companies

We make optimum use of the networking and synergy opportunities with our affiliated companies. Our customers benefits from the collaboration and bundled competences of the Werkstätten Group that enable us to offer a broad range of services. We combine the knowledge, experience and quality management from several customers for the benefit of our customers.  You can find out more about our affiliated companies on their corresponding websites.


Here is an overview of certificates within the Werkstätten corporate group that document our quality and the high international standard. Please contact us if you have any questions about our competences and approvals. We would be pleased to give you some insight to give you a proper impression.


Certified QA system according to regulation 2014/68/EU

Certified manufacturer of pressure containers in accordance with AD 2000-sheet HP0

-Module H/H1

Zertifizierter Schweißbetrieb von Druckbehältern nach DIN EN ISO 3834-2

Manufacture License of Special Equipment PR China
-Pressure Vessels D1, D2
-Organic Fluid Boilers

Certified welding operation for pressure containers in accordance with DIN EN ISO 3834-2, EXC3

Certified in-house production control in accordance with regulation 93/68/EEC

(for construction products in accordance with EN 13084-7)

ASME Boiler and Pressure Vessel Code
-ASME U -Designator
-ASME R -Designator
-ASME S –Designator

Certified specialist operation according to the German Water Resources Act (WHG)