Domestic pipes can be described as pipes for hot and/or cold water in pressurized heating anddrinking water networks within buildings. The requirements for these domestic applications areincluded in Table 1. Also belonging to this class are “snow melt” and “heat recovery” systems.Such piping systems typically operate at pressures between 2 and 10 bar and temperatures up to80°C with malfunction temperatures up to 100°C. The conditions of use for the different hot waterpipe classes/applications (under floor heating, radiator connectors and plumbing pipe) aredescribed in ISO 105081