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KÖSTER is a welding company.
We weld certified according to DIN EN ISO 1090-2, up to design class EXC3 (dynamically stressed components). Accordingly, we hold the EU certificate of "in-house production control for load-bearing steel components" up to this design class. We monitor the quality of our welding work and are certified according to DIN EN ISO 3834-2.
We have designed and built the first passenger transport winch on the European market according to the new Machinery Directive 2006/42/EC (2nd edition June 2010).
Our electric and hand winches have an EC type examination.
Our foundry has been approved as a material manufacturer and is certified accordingly, e. g. by

• DNV GL and Bureau Veritas (BV) for spheroidal graphite cast iron (EN-GJS) and grey cast iron (EN-GJL)
• Lloyds Register (LR) for spheroidal and grey cast iron