EN 1401的这一部分规定了非压力地下排水和污水处理领域的固体壁管，配件和未增塑聚氯乙烯（PVC U）管道系统的要求: a）建筑结构外（应用领域代码“U”）和 b）建筑结构（应用领域代码“D”）和建筑物外都埋在地下。 这反映在“U”和“UD”的产品标记中。 它还规定了本欧洲标准中提到的测试方法的测试参数。 该欧洲标准涵盖范围广泛的公称尺寸，一系列管道和配件系列和一系列刚度等级，并提供有关颜色的建议。 结合prCEN/TS 1401-2 [1]和ENV 1401-3 [2]，它适用于PVC U管和配件，其接头和与其他塑料和非塑料材料部件的接头，旨在用于埋地管道系统用于非压力地下排水和污水处理。 本欧洲标准适用于不带插座的非泡沫PVC U管以及带有整体插座的管道。 配件可以通过注射成型制造或由管道和/或模制品制造。 应用领域代码的要求和限制值“

This document specifies the requirements for solid wall pipes with smooth internal and external surfaces, extruded from the same formulation throughout the wall, fittings and the system of unplasticized poly(vinyl chloride) (PVC U) piping systems in the field of non-pressure underground drainage and sewerage: - buried in ground outside the building structure (application area code "U"), and - both buried in ground, within the building structure and outside the building (application area code "UD"). NOTE 1 The intended use is reflected in the marking of products by "U" or "UD". It also specifies the test parameters for the test methods referred to in this document. NOTE 2 Multilayer pipes with different formulations throughout the wall and foamed core pipes are covered by EN 13476-2 [1]. This document covers a range of nominal sizes, a range of pipes and fittings series and a range of stiffness classes and gives recommendations concerning colours. NOTE 3 It is the responsibility of the purchaser or specifier to make the appropriate selection from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. It is applicable to PVC U pipes and fittings, their joints and to joints with components of other plastics and non-plastics materials intended to be used for buried piping systems for non-pressure underground drainage and sewerage. NOTE 4 Pipes, fittings and other components conforming to any of the plastics product standards listed in Annex C can be used with pipes and fittings conforming to this document, provided they conform to the requirements for joint dimensions given in Clause 7 and to the requirements of Table 16.