EN 13476的本部分与EN 13476-1一起，规定了基于未增塑聚氯乙烯（PVC-U）、聚丙烯（PP）和聚乙烯（PE）结构墙管道系统的管道、配件和系统的定义和要求，这些管道、配件和系统旨在用于无压地下排水系统。本部分适用于内外表面光滑的管道和管件，称为A型。规定了试验方法、试验参数和要求。本部分适用于:a） 结构墙管道和配件，拟用于建筑结构外的地下；反映在产品的“U”标记上；b） 结构墙管道和配件，拟用于室外（应用区域代码“U”）和建筑结构内的地下（应用区域代码“D”）；反映在“UD”的产品标记中。本部分适用结构墙管道和配件，带或不带整体插座，带弹性环密封接头以及焊接和熔合接头。本部分涵盖一系列管道和配件尺寸、材料、管道结构、刚度等级、应用等级和公差等级，并给出有关颜色的建议。注:买方或规范制定者有责任从这些方面做出适当的选择，同时考虑到其特殊要求和任何相关的国家法规、安装实践或规范。

This part of EN 13476, together with EN 13476-1, specifies the definitions and requirements for pipes, fittings and the system based on unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) structured-wall piping systems that are intended to be used for non-pressure underground drainage and sewerage systems. This part is applicable to pipes and fittings with smooth internal and external surfaces, designated as Type A. It specifies test methods and test parameters as well as requirements. This part is applicable to: a) structured-wall pipes and fittings, which are intended to be used buried underground outside the building structure; reflected in the marking of products by "U"; b) structured-wall pipes and fittings, which are intended to be used buried underground both outside (application area code "U") and within the building structure (application area code "D"); reflected in the marking of products by "UD". This part is applicable to structured-wall pipes and fittings with or without an integral socket with elastomeric ring seal joints as well as welded and fused joints. This part covers a range of pipe and fitting sizes, materials, pipe constructions, stiffness classes, application classes, and tolerance classes and gives recommendations concerning colours. 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.