1.1 本规范涵盖氯化聚氯乙烯/铝/氯化聚氯乙烯（CPVC-AL-CPVC）复合压力管，其内层和外层之间具有焊接铝管加强件。内部和外部CPVC层通过熔融粘合剂结合到铝管上。包括复合管的命名系统、材料的要求和试验方法、组件层和成品管的尺寸、附着力试验、静水压爆裂和持续压力以及热循环性能。还给出了标记的要求和方法。本规范涵盖的部件适用于住宅和商业、冷热饮用水分配系统。 注1: 本标准的文本引用了提供解释性材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应被视为本标准的要求。 1.2 本规范仅涵盖包含连续焊接铝管的复合管。由未连续焊接在一起的金属层组成的管道不在本规范的范围内。 1.3 符合本规范要求的复合管用内套管规范见 附件A1 . 1.4 符合本标准要求的卡套管设计为与符合规范要求的配件和溶剂水泥一起使用 D2846/D2846米 当根据 附件A2 . 警告 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。 1.5 本规范所涵盖的产品仅适用于与管道材料化学相容的加压液体的分配。 由于用压缩空气或其他压缩气体测试部件和系统存在固有危险，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，请咨询具体的产品制造商，了解其具体的测试程序。 1.6 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。 注2: 建议的管道静水压设计压力和压力额定值列于 附录X1 . 1.7 以下安全隐患警告仅适用于试验方法部分，第节 9 . 本标准并不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。 1.8 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 a Chlorinated Poly(Vinyl Chloride)/Aluminum/Chlorinated Poly(Vinyl Chloride), (CPVC-AL-CPVC), composite pressure tubing with a welded aluminum tube reinforcement between the inner and outer layers. The inner and outer CPVC layers are bonded to the aluminum tube by a melt adhesive. Included is a system of nomenclature for the composite tubing, the requirements and test methods for materials, the dimensions of the component layers and finished tubing, adhesion tests, hydrostatic burst and sustained pressure and thermocycling performance. Also given are the requirements and methods of marking. The components covered by this specification are intended for use in residential and commercial, hot and cold, potable water distribution systems. Note 1: The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.2 This specification covers only composite tubing incorporating a continuously welded aluminum tube. Tubing consisting of metallic layers not continuously welded together are outside the scope of this specification. 1.3 Specifications for internal bushings for use with composite tubing meeting the requirements of this specification are given in Annex A1 . 1.4 Tubing meeting the requirements of this standard are designed to be used with fittings and solvent cements meeting the requirements of Specification D2846/D2846M when assembled in accordance with Annex A2 . Warning— 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. 1.5 The products covered by this specification are intended for use with the distribution of pressurized liquids only, which are chemically compatible with the tubing 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 manufacturers for their specific testing procedures prior to pneumatic testing. 1.6 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. Note 2: Suggested hydrostatic design pressures and pressure ratings for tubing are listed in Appendix X1 . 1.7 The following safety hazards caveat pertains only to the test method portion, Section 9 . 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. 1.8 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.