Certificates and permits

We are a member of Gütegemeinschaft Beton (Quality Control Association for Concrete) and the Gütegemeinschaft Herstellung und Instandhaltung von Abwasserleitungen und Kanälen e.V. (Quality Control Association for the Production and Maintenance of Sewage Pipes and Sewers), and, as a specialist company, hold numerous permits and certificates, some of which are listed below:

  • QMS certified company in accordance with DIN EN ISO 9001:2015
  • EnMS certified company in accordance with DIN EN ISO 50001:2011
  • EMS certified company in accordance with DIN EN ISO 14001:2015
  • Approved DGNB® and LEED® auditors for retail, office and admin buildings
  • Certificate of suitability as per manufacturer and user regulations (HAVO) for the manufacture and installation of concrete in monitoring classes 2 and 3 and other specific properties on building sites in accordance with DIN 1045-3
  • Certified pipeline construction company in accordance with DVGW (German Technical and Scientific Association for Gas and Water) GW 301, Group W1, G1; DVGW GW 302, Group R3: RR, RV; Group GN 3; Group R 2; DVGW GW 381, Group LTB
  • Certified district heating/pipeline construction company in accordance with AGFW (German Heat and Power Association) FW 601, Group FW1
  • Quality seal RAL underground cabling 962/2
  • Quality seal RAL sewer construction AK2
  • Licensed specialist in accordance with §19 WHG (Water Framework Directive)
  • Certified company for the welding of metal construction materials in accordance with DIN EN ISO 3834-2
  • Certified for welding of steel structures up to EXC 3 in accordance with DIN EN 1090-2
  • Certified for load-bearing construction components and construction kits for steel structures up to EXC 3 according to EN 1090-2
  • Certificate of suitability for the welding of concrete reinforcing steel according to DIN EN ISO 17660
  • Certificate of suitability as per manufacturer and user regulations (HAVO) for the maintenance of load-bearing concrete structural elements whose structural integrity is at risk
  • Certificate for the reinforcement of concrete structural elements by bonding steel mounting plates and CFRP strips
  • Certificate for the safety management system based on BASF specifications
  • Certified waste disposal company in accordance with Section 56 KrWG (Closed Substance Cycle and Waste Management Act)
  • Qualified recycling company in accordance with products certified according to BÜV/QRB (Baden-Württemberg Quality Control System for Recycling Building Materials)
  • Entry in Hessian pre-qualification register (HPQR certificate)
  • Certified company according to the SGU (Safety, Health, Environment) management system, SCCP