ISO 15875-5:2003规定了旨在用于建筑物内的热水和冷水设施的交联聚乙烯（PE-X）管道系统适用性的特征，用于运输可能或可能不是意图的水用于人类消费（家庭系统）和供暖系统，设计压力和适用于适用类别的温度。 它涵盖一系列服务条件（应用类别）和设计压力等级。如果设计温度，最大设计温度和故障温度的值超过ISO 15875-1中给出的值，则不适用。 它还规定了标准参考的测试方法的测试参数。 结合ISO 15875的其他部分，适用于PE-X管，配件及其接头，包括用于其他塑料部4568件的接头和旨在用于冷热水设备的非塑料材料

ISO 15875-5:2003 specifies the characteristics of the fitness for purpose of crosslinked polyethylene (PE-X) piping systems intended to be used for hot and cold water installations, within buildings, for the conveyance of water which may or may not be intended for human consumption (domestic systems) and for heating systems, under design pressures and temperatures appropriate to the class of application. It covers a range of service conditions (classes of application) and design pressure classes. It does not apply if the values of the design temperature, maximum design temperature and malfunction temperature are in excess of those given in ISO 15875-1. It also specifies the test parameters for the test methods referred to in the standard. In conjunction with the other parts of ISO 15875, it is applicable to PE-X pipes, fittings and their joints, including joints with components of other plastics and non-plastics materials intended to be used for hot and cold water installations.