1.1 本规范涵盖了在内层和外层之间具有焊接铝管加强件的共挤交联聚乙烯复合压力管。内部和外部交联聚乙烯层通过熔融粘合剂结合到铝管上。包括交联聚乙烯-铝交联聚乙烯（PEX-AL-PEX）管道的命名系统、材料的要求和试验方法、组件层和成品管道的尺寸、附着力试验以及爆裂和持续压力性能。 还给出了标记的要求和方法。本规范涵盖的管道适用于住宅和商业应用的饮用水分配系统、供水系统、建筑供应线、地下灌溉系统和辐射板供暖系统、底板、融雪和融冰系统以及与复合管道和配件兼容的气体。 注1: 本规范所涵盖的管道不建议用于室内可燃气体应用。 1.2 本规范仅涵盖包含焊接铝管的复合管。由未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 符合本规范要求的管道用连接器规范见 附件A1 . 1.4 本规范不包括聚乙烯铝聚乙烯管（见规范 F1282 ). 1.5 以国际单位制表示的数值应视为标准。SI单位后括号中给出的值仅供参考，不被视为标准值。 1.6 以下注意事项仅适用于试验方法部分，第节 9 ，本规范的: 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。 1.7 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 coextruded crosslinked polyethylene composite pressure pipe with a welded aluminum tube reinforcement between the inner and outer layers. The inner and outer crosslinked polyethylene layers are bonded to the aluminum tube by a melt adhesive. Included is a system of nomenclature for the crosslinked polyethylene-aluminum-crosslinked polyethylene (PEX-AL-PEX) pipes, the requirements and test methods for materials, the dimensions of the component layers and finished pipe, adhesion tests, and the burst and sustained pressure performance. Also given are the requirements and methods of marking. The pipe covered by this specification is intended for use in potable water distribution systems for residential and commercial applications, water service, building supply lines, underground irrigation systems, and radient panel heating systems, baseboard, snow- and ice-melt systems, and gases that are compatible with the composite pipe and fittings. Note 1: Piping covered by this specification is not recommended for use in indoor flammable gas applications. 1.2 This specification covers only composite pipes incorporating a welded aluminum tube. Pipes consisting of metallic layers not welded together are outside the scope of this specification. 1.3 Specifications for connectors for use with pipe meeting the requirements of this specification are given in Annex A1 . 1.4 This specification excludes polyethylene-aluminum-polyethylene pipes (see Specification F1282 ). 1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.6 The following precautionary caveat pertains only to the test methods portion, Section 9 , 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. 1.7 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.