ISO 15875-5:2003规定了交联聚乙烯（PE-X）管道系统的适用性特征，该系统拟用于建筑物内的热水和冷水装置，用于输送可能或可能不用于人类消费的水（家用系统）和供暖系统，在适用于应用类别的设计压力和温度下。 它涵盖了一系列工作条件（应用等级）和设计压力等级。如果设计温度、最高设计温度和故障温度的值超过ISO 15875中给出的值，则不适用- 1. 它还规定了本标准中提及的试验方法的试验参数。 与ISO 15875的其他部分一起，它适用于PE-X管道、配件及其接头，包括与其他塑料和非塑料材料组成的用于热水和冷水装置的接头。

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.