Apart from product and material-related approval, we also offer certification and approval of manufacturing companies and suppliers. This service provides thousands of certificates issued by DNV and GL within the maritime area. DNV GL approval of manufacturers confirms that you have been found in compliance with international standards, regulations and the DNV or GL rules.

Our approval procedure comprises inspection of the manufacturing plant, and testing to verify that the materials, manufacturing processes and products comply with the requirements of the applicable rules.

Details are given in approval programmes, which are worked out for the following categories, among others:

  • Steelmaking and rolled steel products
  • Steel forgings
  • Foundries – casting of steel, iron, aluminium alloys and copper alloys
  • Wrought-aluminium alloys
  • Steel tubes, pipes and fittings
  • Non-ferrous tubes
  • Chain cables
  • Steel wire ropes

After completion of the approval process, an approval certificate is issued. All approved manufacturers and suppliers are then included in our online list of approved companies, so that potential customers can easily find them.

DNV GL’s manufacturer approval includes:

Contact us

If you want to learn more about our approval programmes for service suppliers, please contact your nearest DNV GL office. Our experts in Hamburg and Oslo are also happy to support you.