塑料管道系统 供水用聚乙烯（PE）管和配件 第2部分：管道

[中文适用范围]： 本文件规定了用于埋地或地上应用的聚乙烯 (PE) 管道，旨在输送： — 人类饮用水； — 处理前的原水； — 加压排水和排污； — 真空污水系统； — 其他用途的水。 注 1 预期用途包括海水排放口、敷设在水中的管道和悬挂在桥下的管道。除非另有特殊考虑，否则符合本文件要求的管道不适用于在受污染土壤中输送人类饮用水。 注 2 例如，ISO 21004 提供了在受污染土壤中使用的替代解决方案。见参考书目中的参考文献 [3]。 本文件规定了三种类型的管道： — PE 管（外径 dn），包括任何识别条纹； — 管道外侧和/或内侧或外侧均有共挤层的 PE 管（总外径 dn），其中所有层具有相同的 MRS 等级； — 管外部具有可剥离且连续的热塑性塑料附加层（“涂层管”）的 PE 管（外径 dn）。本文件还规定了本文件中提及的试验方法的试验参数。与 ISO 4427 系列的其他部分结合，本文件适用于 PE 管、其接头以及带有由 PE 和其他材料制成的部件的接头，旨在在以下条件下使用：a) 最大允许工作压力（PFA）不超过 25 bar1)；b) 以 20°C 的工作温度为参考温度。注 3 对于其他工作温度，请参阅 ISO 4427-1:2019 附件 A。1) 1 bar = 0,1 MPa = 105 Pa；1 MPa = 1 N/mm2。  本文件涵盖了一系列最大允许工作压力，并给出了有关颜色的要求。注 4：购买者或指定者有责任从这些方面做出适当的选择，同时考虑到他们的特殊要求和安装实践或规范。 [外文原描述]： This document specifies the pipes made from polyethylene (PE) for buried or above ground applications, intended for the conveyance of: — water for human consumption; — raw water prior to treatment; — drainage and sewerage under pressure; — vacuum sewer systems; — water for other purposes. NOTE 1 The intended uses include sea outfalls, laid in water and pipes suspended below bridges. Pipes complying with this document are not intended for the transport of water intended for human consumption in contaminated soils unless special consideration has been taken. NOTE 2 For example, ISO 21004 provides an alternative solution for use in contaminated soils. See Reference [3] in the Bibliography. This document specifies three types of pipe: — PE pipes (outside diameter d n ), including any identification stripes; — PE pipes with co-extruded layers on either or both the outside and/or inside of the pipe (total outside diameter d n ) where all layers have the same MRS rating; — PE pipes (outside diameter d n ) having a peelable and contiguous thermoplastics additional layer on the outside of the pipe ("coated pipe"). This document also specifies the test parameters for the test methods referred to in this document. In conjunction with the other parts of the ISO 4427 series, this document is applicable to PE pipes, their joints and to joints with components made of PE and other materials, intended to be used under the following conditions: a) a maximum allowable operating pressure (PFA) up to and including 25 bar[1]; b) an operating temperature of 20 ° C as the reference temperature. NOTE 3 For other operating temperatures, guidance is given in ISO 4427‑1:2019, Annex A. This document covers a range of maximum allowable operating pressures and gives requirements concerning colours. NOTE 4 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and installation practices or codes. [1] 1 bar = 0,1 MPa = 10 5 Pa; 1 MPa = 1 N/mm 2 .