用于地下燃气供应网络修复的管道系统 第1部分：聚乙烯（PE）材料（ISO/DIS 11301‑1:2025）

[中文适用范围]： 本文件规定了用于通过改造和非开挖更换方式对地下燃气管网进行修复的管道和管件的要求及测试方法。本文件适用于制造和安装后的聚乙烯（PE）管道、管件及组合件，但不适用于现有管道。本文件适用于以下改造技术类别：——使用连续管进行内衬；——使用紧密配合管进行内衬；以及以下非开挖更换技术类别：——爆管和管道抽取；——水平定向钻孔和冲击扩孔。本文件适用于以下内容：——具有实心壁层、单层结构、标称外径（dn）的PE管道，包括任何标识条；——在管的内外侧（或其中一侧）具有共挤层、总外径为（dn）的PE管道，如附录D中所规定，所有层的MRS等级相同。此外，当与连续管内衬和非开挖更换技术一起使用时，本文件适用于以下内容：——外表面带有可剥离、连续、热塑性附加层的PE涂覆管道（外径为dn），如附录D中所规定。当与紧密配合内衬管一起使用时，内衬管在工厂或现场被减小尺寸，以提供独立或互动的承压管内衬。本文件适用于通过对接熔焊和电熔焊连接的PE管道，以及通过制造和注塑成型的管件和机械连接的PE管道。本文件不适用于作为非开挖安装过程中组装部分的推入式连接离散管道。 [外文原描述]： This document specifies requirements and test methods for pipes and fittings which are part of piping systems for the rehabilitation by means of renovation and trenchless replacement of underground gas supply networks. It is applicable to polyethylene (PE) pipes, fittings and assemblies, as manufactured and as installed. It is not applicable to the existing pipeline. It is applicable to technique families for renovation: — lining with continuous pipes; — lining with close-fit pipes; and technique families for trenchless replacement: — pipe bursting and pipe extraction; — horizontal directional drilling and impact moling. This document is applicable to: — 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 D, where all layers have the same MRS rating. Furthermore, when used with lining with continuous pipes and trenchless replacement this document is applicable to: — PE coated pipes (outside diameter, dn) having a peelable, contiguous, thermoplastics additional layer on the outside of the pipe (“coated pipe”), as specified in Annex D. When used with lining with close-fit lining pipes, the lining pipe is reduced in the factory or on site to provide a close-fitting independent or interactive pressure pipe liner. This document is applicable to jointing by means of butt fusion and electrofusion and to fabricated and injection-moulded fittings and mechanical connections of PE. This document is not applicable to push-fit jointed discrete pipes assembled as part of the trenchless installation process.