BS EN 1456-1:2001 Plastic piping systems for buried and above - ground drainage and sewerage under pressure — Unplasticized poly (vinyl chloride) (PVC - U) — Part 1 : Specifications for piping components and the system
2010BS EN ISO 1452-1:2009 Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure - Unplasticized poly(vinyl chloride) (PVC U) - General
1970BS EN 1456-1:2001 Plastic piping systems for buried and above - ground drainage and sewerage under pressure — Unplasticized poly (vinyl chloride) (PVC - U) — Part 1 : Specifications for piping components and the system