Ensuring the required quality is Raff + Grund's highest priority. For this reason we have a certified quality management system to EN ISO 9001:2015 as well as an environmental management system to EN ISO 14001:2004. We are approved for the construction of pressure vessels to ISO 3834-3 (HP0 - AD2000 - EN13445) and are a specialist company to §19.1 WHG (German Water Management Law). We also have manufacturer qualifications for the welding of steel components to DIN18800-7 Cl. B.