SS-EN 1329-1:2026

This document specifies the requirements for solid wall pipes with smooth internal and external surfaces, extruded from the same formulation throughout the wall, fittings and the system of unplasticized poly(vinyl chloride) (PVC-U) piping systems intended for soil and waste discharge applications (low and high temperature): —inside buildings (application area code “B”), above ground inside the building, or outside buildings fixed onto the wall; —for both inside buildings (application area code “B”) and buried in ground within the building structure (application area code “D”), which is reflected in the marking by “BD”. This intended use is only applicable for components with nominal outside diameters equal to or greater than 75 mm.