塑料管道系统用于非压力地下排水和下水道 - 未塑化聚（氯乙烯）（Pvc-U） 聚丙烯（Pp）和聚乙烯（Pe）的结构化壁管道系统 - 第3部分:不平滑的管道和配件外表面 B型

[中文适用范围]： 本文件与 ISO 21138-1 一起规定了基于非增塑聚氯乙烯 (PVC-U) 的非光滑外表面和光滑内表面（B 型）管道、配件和系统的定义和要求、聚丙烯 (PP) 和聚乙烯 (PE) 结构壁管道系统，旨在用于非压力地下排水和污水处理应用。 注1：符合本文件要求的管道、配件和系统也可用于公路排水和地表水。 本文件规定了测试方法和测试参数。 本文件涵盖了一系列管道和配件尺寸、材料、管道结构和标称环刚度，并给出了有关颜色的建议。 注 2：购买者或指定者有责任从这些方面做出适当的选择，并考虑到他们的特殊要求和安装实践或规范。 与 ISO 21138-1 一起，本文件适用于结构壁管道和配件、其接头以及与其他塑料和非塑料材料部件的接头。 它适用于带有或不带有弹性环密封接头以及焊接和熔接接头的整体承插口的管道和配件。 注 3：符合第 2 条提到的任何塑料产品标准的管道、配件和其他部件，当它们符合 ISO 21138-2 中给出的接头尺寸要求时，被认为适合与符合本文件的管道和配件一起使用。 或 ISO 21138-3（本文件）以及第 10 条中给出的性能要求。 注 4：对于大于 DN/OD 1200 或 DN/ID 1200 的尺寸，本文件可作为有关外观、颜色、物理和机械的一般指导特性以及性能要求。 本文件中未包含测试方法。 [外文原描述]： This document, together with ISO 21138‑1, specifies the definitions and requirements for pipes with a non-smooth external surface and a smooth internal surface (Type B), fittings and systems based on unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) structured-wall piping systems intended to be used in non-pressure underground drainage and sewerage applications. NOTE 1 Pipes, fittings and the systems complying with this document can also be used for highway drainage and surface water. This document specifies test methods and test parameters. This document covers a range of pipe and fitting sizes, materials, pipe constructions and nominal ring stiffnesses, and gives recommendations concerning colours. NOTE 2 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. In conjunction with ISO 21138‑1, this document is applicable to structured-wall pipes and fittings, to their joints and to joints with components of other plastics and non-plastics materials. It is applicable to pipes and fittings with or without an integral socket with elastomeric ring seal joints as well as welded and fused joints. NOTE 3 Pipes, fittings and other components conforming to any plastics product standards referred to in Clause 2 are deemed to be suitable for use with pipes and fittings conforming to this document, when they conform to the requirements for joint dimensions given in ISO 21138‑2 or ISO 21138‑3 (this document) and to the performance requirements given in Clause 10. NOTE 4 For dimensions larger than DN/OD 1200 or DN/ID 1200, this document can serve as general guidance regarding appearance, colour, physical and mechanical characteristics as well as performance requirements. Test methods are not included in this document.