DS EN 1796:2013 Plastics Piping Systems For Water Supply With Or Without Pressure - Glass-Reinforced Thermosetting Plastics (Grp) Based On Unsaturated Polyester Resin (Up) Defines the required properties of the piping system and its components made from glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) intended to be used for water