1.1 本规范涵盖了共挤聚氯乙烯（PVC）塑料排水管、污水管和通风管，这些排水管、废水管和通风管道按照40号铁管尺寸（IPS）制造，并通过共挤工艺生产，具有同心的内外固体PVC层，芯部由闭孔多孔PVC组成。不符合第节规定的材料要求的塑料 5. 被排除在单层和所有共挤出层之外。 1.2 符合规范要求的配件 2665英镑 和 第311页 适用于符合本规范要求的管道。 1.3 聚氯乙烯塑料不符合 5.1 不包括在内，因为未确定除定义为原始塑料以外的塑料的性能。符合中给出的返工塑料要求的PVC返工塑料 5.2 是可以接受的。 1.4 术语中定义的再加工塑料或再生塑料 第883页 被排除在外。 1.5 中提供了有关存储、连接和安装的建议 附录X1 , 附录X2 和 附录X3 分别地 1.6 本规范的文本引用了提供解释性材料的注释、脚注和附录。这些注释和脚注（不包括表和图中的注释和脚注）不应被视为规范的要求。 1.7 以英寸磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.8 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.9 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 This specification covers coextruded poly(vinyl chloride) (PVC) plastic drain, waste and vent pipe made to Schedule 40 iron pipe sizes (IPS) and produced by the coextrusion process with concentric inner and outer solid PVC layers and the core consisting of closed-cell cellular PVC. Plastic which does not meet the material requirements specified in Section 5 is excluded from single layer and all coextruded layers. 1.2 Fittings meeting the requirements of Specification D2665 and D3311 are suitable for use with pipe meeting the requirements of this specification. 1.3 Poly(vinyl chloride) plastic which does not meet the definitions of virgin PVC plastic as given in 5.1 is excluded, as performance of plastic other than those defined as virgin was not determined. PVC rework plastic which meets the requirements of rework plastic as given in 5.2 is acceptable. 1.4 Reprocessed plastic or recycled plastic as defined in Terminology D883 is excluded. 1.5 Recommendations for storage, joining and installation are provided in Appendix X1 , Appendix X2 , and Appendix X3 respectively. 1.6 The text of this specification references notes, footnotes and appendices which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification. 1.7 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.