ISO 15876-5:2017规定了聚丁烯-1（PB-1）管道系统的适用性特征，该管道系统拟用于建筑物内输送水的热水和冷水装置，无论是否用于人类消费，（家用系统）以及供暖系统，根据应用类别，在设计压力和温度下（见ISO 15876-1）。 在本文件中，名称聚丁烯与缩写PB一起使用。 ISO 15876-5:2017涵盖了一系列工作条件（应用等级）和设计压力等级。对于超过ISO 15876-1:2016表1规定的TD、Tmax和Tmal值，本文件不适用。 注:买方或规范方有责任从这些方面做出适当选择，同时考虑其特殊要求和任何相关国家法规和安装实践或规范。 它还规定了本文件中提及的试验方法的试验参数。 与ISO 15876的其他部分一起，它适用于PB管道、配件及其接头，以及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 15876-5:2017 specifies the characteristics of the fitness for purpose of polybutene-1 (PB-1) piping systems, intended to be used for hot and cold water installations within buildings for the conveyance of water, whether or not intended for human consumption, (domestic systems) and for heating systems, under design pressures and temperatures according to the class of application (see ISO 15876？1). The designation polybutene is used together with the abbreviation PB throughout this document. ISO 15876-5:2017 covers a range of service conditions (application classes) and design pressure classes. For values of TD, Tmax and Tmal in excess of those in ISO 15876？1:2016, Table 1, this document does not apply. NOTE It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. It also specifies the test parameters for the test methods referred to in this document. In conjunction with the other parts of ISO 15876, it is applicable to PB pipes, fittings, their joints and to joints with components of other plastics and non-plastics materials intended to be used for hot and cold water installations.