This Part of DIN EN ISO 1452 specifies the characteristics of solid-wall pipes made from unplasticized poly(vinyl chloride) (PVC-U) for piping systems intended for water supply and for buried and above ground drainage and sewerage under pressure. It also specifies the test parameters for the test methods referred to in this document. In conjunction with Parts 1 and 5 of ISO 1452, it is applicable to extruded PVC-U pipes without a socket and pipes with a socket (integral or not), intended to be used for the following: a) water mains and services buried in ground; b) conveyance of water above ground for both outside and inside buildings; c) buried and above ground drainage and sewerage under pressure. It is applicable to piping systems intended for the supply of water under pressure up to and including 25 °C (cold water) intended for human consumption and for general purposes as well as for waste water under pressure. This document is also applicable to pipes for the conveyance of water and waste water up to and including 45 °C. This document covers a range of pipe sizes and pressure classes and gives requirements concerning colours.