1.1 本规范涵盖按表40和表80尺寸和额定水压制造的氯化聚氯乙烯（CPVC）管（见 附录X1 ). 包括氯化聚氯乙烯塑料管材料和氯化聚氯乙烯塑料管道的分类标准，氯化聚氯乙烯塑料管材的命名系统，以及材料、工艺、尺寸、持续压力、爆裂压力、压扁和挤压质量的要求和测试方法。还给出了标记方法。 注1: 本规范所涵盖的氯化聚氯乙烯管道已在之前的规范中涵盖 第1785天 . 注2: 持续和爆裂压力试验要求，以及 附录X1 ，是根据对2 in.[50 mm]及以下管道进行的试验获得的应力值计算得出的。然而，对较大管道的测试表明，这些应力值是有效的。 1.2 本规范所涵盖的产品仅用于分配与管道材料化学相容的加压液体。 由于用压缩空气或其他压缩气体测试部件和系统的固有危险，一些制造商不允许对其产品进行气动测试。在进行气动测试之前，请咨询具体的产品/部件制造商，了解其具体的测试程序。 注3: 加压（压缩）空气或其他压缩气体含有大量储存的能量，如果系统因任何原因发生故障，这些能量会带来严重的安全隐患。 1.3 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。 1.4 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值可能不是精确的等效值； 因此，每个系统应独立于其他系统使用。将两个系统的值组合在一起可能会导致不符合标准。 1.5 以下安全隐患警告仅适用于第节测试方法部分 8. ，本规范的: 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。 中给出了具体的预防说明 8.4.1 . 1.6 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 chlorinated poly(vinyl chloride) (CPVC) pipe made in Schedule 40 and 80 sizes and pressure-rated for water (see Appendix X1 ). Included are criteria for classifying CPVC plastic pipe materials and CPVC plastic pipe, a system of nomenclature for CPVC plastic pipe, and requirements and test methods for materials, workmanship, dimensions, sustained pressure, burst pressure, flattening, and extrusion quality. Methods of marking are also given. Note 1: The CPVC pipe covered by this specification was covered previously in Specification D1785 . Note 2: The sustained and burst pressure test requirements, and the pressure ratings in the Appendix X1 , are calculated from stress values obtained from tests made on pipe 2 in. [50 mm] and smaller. However, tests on larger pipe have shown these stress values to be valid. 1.2 The products covered by this specification are intended for use with the distribution of pressurized liquids only, which are chemically compatible with the piping materials. Due to inherent hazards associated with testing components and systems with compressed air or other compressed gases some manufacturers do not allow pneumatic testing of their products. Consult with specific product/component manufacturers for their specific testing procedures prior to pneumatic testing. Note 3: Pressurized (compressed) air or other compressed gases contain large amounts of stored energy which present serious safety hazards should a system fail for any reason. 1.3 The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5 The following safety hazards caveat pertains only to the test methods portion, Section 8 , of this specification: 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. A specific precautionary statement is given in 8.4.1 . 1.6 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.