EN xxxx的这一部分规定了定向未增塑聚氯乙烯（PVC-O）的一般方面，用于供水的固体墙管道系统，加压下水道系统和灌溉系统，用于地下或地上，保护阳光直射 结合EN xxxx-2，EN xxxx-3，EN ISO 1452-4，适用于PVC O管，PVC-O配件，阀门，接头以及与其他塑料和非塑料材料部件接头拟用于以下内容: a）埋在地下的水管和服务; b）在建筑物外部和内部输送地上水; c）在压力下埋地和地上排水和污水。 d）在压力下埋地和地上灌溉 适用于在压力高达25摄氏度（冷水）下供应水的管道系统，用于人类消费和一般用途以及压力下的废水。 EN xxxx的这一部分也适用于运输包括45°C在内的水和废水的组件。对于25°C至45°C的温度，适用于EN xxxx 2:2015的图A.1

This part of FprEN 17176 specifies the material characteristics of oriented unplasticized poly(vinyl chloride) (PVC-O) solid wall piping systems intended for water supply and for buried drainage, sewerage and irrigation under pressure or above-ground where protected from direct sunlight. In conjunction with FprEN 17176-2, FprCEN/TS 17176-3 and EN ISO 1452-3, it is applicable to PVC-O pipes, PVC-O fittings, their joints and to joints with components of other plastics and non-plastics materials intended to be used for the following: a) water mains and services lines; b) conveyance of water for both outside and inside buildings; c) drainage, sewerage and treated waste water under pressure; d) irrigation under pressure. Joints constructed of other materials shall meet their own standards in addition to the fitness of purpose requirements specified in FprEN 17176-5. It is applicable to piping systems intended for the supply of water with a maximum allowable operating pressure (PFA) up to and including 25 bar. The piping system according to this document is intended for the conveyance of cold water up to and including 45 °C and especially in those applications where special performance requirements are needed, such as impact loads and pressure fluctuations. For temperatures between 25 °C and 45 °C, FprEN 17176-2:2018, Figure C.1 applies. 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.