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Obtaining the necessary approvals and certificates is a key requirement for our work. These are regularly reviewed and updated according to the applicable regulations.

In addition, the FRIEDRICH VORWERK Group has recorded its activities in the fields of Health, Safety and Environmental Protection (HSE) as well as Quality Assurance (QA), in an integrated management system that is regularly audited and certified by external organisations.

Our certificates

  • Quality management according to DIN EN ISO 9001:2008
  • Environmental management according to DIN EN ISO 14001:2009
  • Safety management according to SCCP 2006 Safety Certificate Contractors
  • Energy management according to DIN EN ISO 50001:2011
  • Pipe construction company according to DVGW GW 301 groups G1 and W1
  • Pipe construction company according to DVGW GW 301 group R2
  • DVGW G 493-1 group 2 - Manufacturing of gas plants and systems
  • DVGW G 493-2 group 2 - Maintenance of gas plants and systems
  • DVGW GW 11 - Cathodic corrosion protection
  • DVGW G 468-1 - Inspection of gas pipeline systems
  • Specialised according to § 19 I German Federal Water Act (WHG)
  • RAL quality mark - Sewer construction - Group AK1
  • CE0045 - Manufacturing according to module G and F, Directive 97/23/EG, Standard PED 97/23/EG / AD 2000 Instruction sheet HP0 / DIN EN ISO 3834-3 (EN 729-3)
  • TRbF 301 / TRGL / DVGW Codes of practice / VdTÜV Instruction sheet 1052 - Manufacturing of pipelines and plants
  • AGFW Worksheet FW 601 group FW1 - District heating pipelines for steam / heating water systems
  • RAL Quality mark GZ 962 - Underground cable laying
  • PQ VOB: Entry in the list of prequalified construction companies at the association for the prequalification of construction companies
  • Accredited supplier at Connexio, supplier information system for energy suppliers