What's protected, where, and with which system.
Five typical applications across Finnish infrastructure. The same catalogue covers all of them, and we'll help you pick the right product family for each.
District heating
EN‑489-compliant joint sealing for Finnish district heating networks
Industry and offshore
Stopaq corrosion protection for refineries, process piping and offshore structures
Municipal water and heating
Joint sealing and corrosion protection for water and district heating networks
- Systems
- Covalence · Stopaq
- Standards
- ISO 21809‑3 · EN 12068
- Cathodic protection
- Compatible
Gas pipelines
Gas pipeline sealing and corrosion protection, when the consequences of failure are different
- Systems
- Covalence · Stopaq
- Operating temperature
- −45 … +70 °C
- Application
- Cold, without blasting
Oil pipelines
Joint sealing and corrosion protection for oil distribution and process pipelines
Three product families, three different problems
The application tells you where you are. This tells you which of the three solves it.
Choose this when the joint is on pre‑insulated pipe and the sizes vary: the sleeve is wrapped on site and covers casings from 90 to 1200 mm, including repairs and dimensions outside a standard series.
Choose this when the surface is bare steel or an irregular shape: bends, valves, flanges, tanks, and corrosion under insulation. ST2 cleaning is enough, no blasting is needed, and it works as prevention as much as repair.
Choose this when the pipe size falls in the DN 90–450 standard series and many similar joints are made: the prefabricated sleeve is fast and repeatable, no welding is needed, and the joint is leak‑testable.
Application not on the list? Request a quote.
Briefly describe the application; we'll reply on catalogue match and availability.