CERTIFICATIONS Plettenberg drawing mill Certificate Management System DIN EN ISO 14001:2015 Energy management system DIN EN ISO 50001:2018 QM certificate IATF 16949:2016 QM Certificate DIN EN ISO 9001:2015 Certificate for „Pressure Equipment“ AD 2000 code of practice W0 Material manufacturer according to Pressure Equipment Directive 2014/68/EU Westfälische Stahlgesellschaft group of companies QM certificate DIN EN ISO 9001:2015 Westfälische Stahlgesellschaft Plettenberg QM certificate DIN EN ISO 9001:2015 Westfälische Stahlgesellschaft Löhne QM certificate DIN EN ISO 9001:2015 GL restamping certificate Weser Stahl Stuhr-Brinkum QM certificate DIN EN ISO 9001:2015 DIN EN 764-5 section 6 Transfer of material marking (DE) DIN EN 764-5 section 6 Transfer of material marking (EN)