PVC-U Multilayer Pipe SN2 Plain-Ended KGGL

  Datasheet (PDF)

PVC-U multilayer plain-ended pipes SN2 SDR 51 (KGGL) are precision-engineered for non-pressure underground gravity drainage networks, stormwater conveyance, and primarily as vertical riser shafts in modular sewer inspection chambers. Manufactured through advanced co-extrusion in compliance with SR EN 13476-1 and SR EN 13476-2, each pipe incorporates a structured three-layer composite wall comprising solid, abrasion-resistant internal and external unplasticized polyvinyl chloride layers bonded to an intermediate cellular foamed PVC core. This construction provides optimal mechanical performance and high ring stiffness while significantly reducing unit weight compared to solid-wall alternatives. Rated at a nominal ring stiffness of SN2 (2 kN/m2, corresponding to SDR 51), the pipe demonstrates outstanding annular flexibility capable of withstanding vertical soil loads through reversible deflections of up to 30 percent without structural failure or cracking. The hydraulically smooth interior surface maintains a roughness coefficient below 0.01 mm, drastically lowering flow friction, eliminating encrustation or sediment build-up, and ensuring maximum hydraulic flow capacity. Featuring a completely plain-ended configuration without an integrated socket, the pipe facilitates versatile cutting and connection via external double couplers, repair sleeves, or elastomeric sealing sockets on inspection chamber bases. The unplasticized PVC compound provides exceptional chemical compatibility across a broad pH range from pH 2 to pH 12, resisting caustic municipal sewage, industrial effluents, and aggressive soil conditions. Formulated for continuous operational temperatures up to 40 degrees Celsius (with short-term thermal surges up to 60 degrees Celsius), the RAL 8023 orange pipe ensures an operational design life exceeding 50 years in buried civil infrastructure.