标准摘要
[中文适用范围]： 本文件与 ISO 11299-1 结合阅读，规定了在地下燃气供应网络改造中作为连续管道安装的塑料管道系统一部分的管材和管件的要求和试验方法。它适用于三种不同类型的聚乙烯 (PE) 管： - PE 实壁单层管（公称外径，dn），包括任何识别条； - 管道内外任一或两侧均有共挤层的 PE 管（总外径，dn），如附录 A 所述，所有层均具有相同的 MRS 等级； - 涂层 PE 管（外径，dn），在管道外部具有可剥离的、连续的热塑性塑料附加层（“涂层管”），如附录 A 所述。此外，它还包括： - 通过对接熔接方式连接管道长度； - 由 PE 制成的装配和注塑管件；本标准适用于以 20°C 为参考温度的 PE 管材、管件和组件。 注：对于其他工作温度，请参阅 ISO 4437-5:2014 中的指导。 [外文原描述]： This document, read in conjunction with ISO 11299-1, specifies requirements and test methods for pipes and fittings which are part of plastics piping systems installed as continuous pipes in the renovation of underground gas supply networks. It is applicable to polyethylene (PE) pipes of three different types: — PE solid wall single layered pipes (nominal outside diameter, dn), including any identification stripes; — PE pipes with co-extruded layers on either or both the outside and inside of the pipe (total outside diameter, dn), as specified in Annex A, where all layers have the same MRS rating; — Coated PE pipes (outside diameter, dn) having a peelable, contiguous, thermoplastics additional layer on the outside of the pipe ("coated pipe"), as described in Annex A. In addition it covers: — jointing of pipe lengths by means of butt fusion; — fabricated and injection-moulded fittings made of PE; It is applicable to PE pipes, fittings and assemblies intended to be used at an operating temperature of 20 °C as the reference temperature. NOTE For other operating temperatures, guidance is given in ISO 4437-5:2014.
英文名称Plastics piping systems for renovation of underground gas supply networks — Part 2: Lining with continuous pipes