本文件与ISO 11299-1一起阅读，规定了地下供气网络改造中作为连续管道安装的塑料管道系统的一部分的管道和配件的要求和试验方法。适用于三种不同类型的聚乙烯（PE）管: -PE实心壁单层管（公称外径dn），包括任何识别条纹； -按照附录A的规定，管道内外各有一层或两层共挤出层的PE管（总外径，dn），其中所有层具有相同的MRS等级； -如附录a所述，在管道外部具有可剥离、连续的热塑性附加层（“涂层管道”）的涂层PE管（外径，dn）。 此外，它还包括: -通过对接熔合方式连接管道长度； -预制和注塑- 聚乙烯模制配件； 适用于在20°C的工作温度下作为参考温度使用的PE管、配件和组件。 注:对于其他工作温度，ISO 4437-5:2014给出了指南。

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.