The Danish Hydrogen Backbone (DHB) project is a comprehensive effort to establish a hydrogen infra-structure in Denmark, connecting planned large-scale hydrogen production in Denmark, produced from renewable energy sources such as wind and solar, with the German and European hydrogen markets. The project is part of the European hydrogen infrastructure and significantly contributes to the EU's goals of climate neutrality and reduction of greenhouse gas emissions.

The full backbone is planned to extend all the way from underground storage in the northern part of Denmark (Lille Torup) to the German border (Frøslev), but a political decision has been made to initially focus on building the southern part of the system (Danish Hydrogen Pipeline – Phase 1), and thereby having this part operational by the end of 2030.

The purpose of the SQS is to establish a pool of qualified Suppliers that may be invited to participate in procurements for the supply of valves required for the DHB.

The SQS covers two valve qualification categories: Mainline & Large Station Ball Valves, including mainline, pipeline, large station, manual piping and process ball valves in manual and actuated configurations; and Control Valves, including General Control Valves and Critical / Severe-Service Control Valves.. Applicants may apply for one or both categories. Final quantities, sizes, pressure classes, duties and technical requirements will be specified in the individual tender documents.