BB2.5 is a UV-cured glass-reinforced plastic (GRP) liner for trenchless sewer pipe rehabilitation. It creates a new structural pipe inside the old one, cured in place using UV light, without excavation.
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The liner is manufactured with an average wall thickness that meets structural design specifications, produced continuously and supplied ready for installation, protected inside and outside by air-tight and water-tight films and packed in a UV-proof film.
BB2.5 is approved under the general approval of the German Institute for Building Technology (DIBt), approval number Z-42.3-490. Because sewer dimensions, cross-sections, and structural loads vary from site to site, BB2.5 is specified per job, talk to BurrowTech’s team about the right configuration for your pipeline.
| Circular profile | DN 150 to DN 1,600 |
|---|---|
| Oval profile | DN 200/300 to DN 1,200/1,800 |
| Short-term circumferential modulus | 14,200 N/mm² (DN 150 to 875) / 16,875 N/mm² (DN 875 to 1600), EN 1228 |
| Long-term circumferential modulus | 11,180 N/mm² (DN 150 to 875) / 13,288 N/mm² (DN 875 to 1600), EN 1228 |
| Short-term bending stress | 200 N/mm², ISO 178 / ISO 11296-4 |
| Long-term bending stress | 157 N/mm², ISO 178 / ISO 11296-4 |
| Density | 1.54 g/cm³, ISO 1183 |
| Approval | DIBt (German Institute for Building Technology), approval no. Z-42.3-490 |
A liner is inserted into the damaged pipe, then hardened in place using UV light, forming a new structural pipe wall without excavation.
Circular profile DN 150 to DN 1,600, oval profile DN 200/300 to DN 1,200/1,800.
Explore other BurrowTech products and equipment for underground infrastructure projects.
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