DS EN 1451-1:2000 Plastics Piping Systems For Soil And Waste Discharge (Low And High Temperature) Within The Building Structure - Polypropylene (Pp) - Part 1: Specifications For Pipes, Fittings And The System Defines the requirements for pipes, fittings and the system of polypropylene (PP) for solid-wall piping systems in the field of soil and waste discharge (low and high temperature) inside buildings (ma