ISO 15876-2:2017规定了聚丁烯-1（PB-1）管道系统的管道特性，这些管道拟用于建筑物内的热水和冷水装置，用于输送水，无论是否供人类使用（家用系统），以及在适用于应用类别的设计压力和温度下的供暖系统（见ISO 15876-1）。 在本文件中，名称聚丁烯与缩写PB一起使用。 ISO 15876-2:2017涵盖了一系列使用条件（应用等级）、设计压力和管道尺寸等级。对于超过ISO 15876-1规定值的TD、Tmax和Tmal，本文件不适用。 注1: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以及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。 结合ISO 15876的其他部分，本文件适用于PB管道及其接头，以及与用于热水和冷水装置的PB、其他塑料和非塑料材料组件的接头。 它适用于有或没有（a）阻挡层的管道。 注2:如果塑料管具有薄阻挡层，例如，为了防止或大大减少气体扩散和光进入或穿过管壁的传输，基础聚合物（PB）完全满足设计应力要求。

ISO 15876-2:2017 specifies the characteristics of pipes for 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 appropriate to the class of application (see ISO 15876？1). The designation polybutene is used together with the abbreviation PB throughout this document. ISO 15876-2:2017 covers a range of service conditions (application classes), design pressures and pipe dimension classes. For values of TD, Tmax and Tmal in excess of those in ISO 15876？1, this document does not apply. NOTE 1 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, this document is applicable to PB pipes, their joints and to joints with components of PB, other plastics and non-plastics materials intended to be used for hot and cold water installations. It is applicable to pipes with or without (a) barrier layer(s). NOTE 2 In the case of plastics pipes provided with a thin barrier layer, e.g. to prevent or greatly diminish the diffusion of gases and the transmission of light into or through the pipe wall, the design stress requirements are totally met by the base polymer (PB).