| Godkjennelse - No. 2031 - X-Stream/Wavin-Rib rør og fittings, dim 100-600 | Product certification | pdf | 28.10.2021 | Download |
| Godkjennelse - No. 2022 - Opti-Rib fittings 200-400 mm | Product certification | pdf | 28.07.2020 | Download |
| Godkjennelse - No. 2045 - X-Stream/Opti-Rib rør og fittings | Product certification | pdf | 28.11.2021 | Download |
| POLYPROPYLENE (PP) SMOOTH WALLED MONOLAYER SEWER PIPE SYSTEM | Product certification | pdf | 28.10.2020 | Download |