Roof construction Welding of steel reinforcements Manufacturer qualification for the welding of steel constructions Stainless steel ramps

Quality confirmed by experts

The work of Schönberger Stahlbau & Metalltechnik is directed towards the highest quality standards by our company philosophy. This is what we are famous for in the industry and with our customers. In addition, this is confirmed through certification by multiple independent authorities.




Welding certificate for load-bearing structural steel components according to EN 1090-2:2008 + A1:2011 (DIN EN 1090-2:2011-10)
Execution class EXC 1 to EXC 4 according to EN 1090-2

Welding processes:
111 Manual arc welding (E)
135 Metal/active gas welding (partial) (tMAG)
783 arc ignition bolt welding (BH)
Basic materials: S 235, S 275, S 355


Certificate conformity of the factory production control 0780-CPR-143176 for load-bearing structural steel components according to EN 1090-2

Execution class EXC 1 to EXC 4


Manufacturer qualification for the welding of steel constructions as per DIN 18800-7:2008-11 class E

Welding processes:
111 Manual arc welding (E)
135 Metal/active gas welding (partial) (tMAG)
783 arc ignition bolt welding (BH)
Basic materials: S 235, S 275, S 355



Welding of steel reinforcements for concrete as per DIN EN ISO 17660-1:2006

Welding process: Manual arc welding (111, E)
Basic materials: Steel reinforcements as per DIN 488, S 235 and S 355



Bolt welding (783 BH) D = 10 to 22 mm

Manufacturer qualification as per DIN 2303 (Authorisation for the manufacture and maintenance of technical reinforcement products by welding)

Welding processes: 111 Manual arc welding (E)
135 Metal/active gas welding (partial) (tMAG)
783 arc ignition bolt welding (BH)
Basic materials: as per CR ISO 15608 1.2



Certified specialist welding operation EXC 4 nach DIN EN 1090-2




Certified specialist welding operation class E as per DIN 18800-7





Approval for activities in third party plants or on equipment as per § 15 of the German Radiation Protection regulation (StrlSchV)






Proof of expertise for demolition, renovation and maintenance work (DRM-work) on all asbestos-containing hazardous substances, including asbestos cement products according to no. 2.7 Annex 3 of the Technical Rule TRGS 519