1.1 本规范涵盖在内层和外层之间具有对焊铝管加强件的共挤聚乙烯复合压力管。内部和外部聚乙烯层通过熔融粘合剂结合到铝管上。包括高温聚乙烯-铝-聚乙烯（PE-RT/AL/PE-RT）管的命名系统、材料要求和试验方法、组成管和成品管的尺寸和强度、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空调和制冷（ACR）、地下灌溉系统、辐射板供暖系统、底板、融雪和融冰系统以及与复合管道兼容的气体。 1.2 本规范仅涉及包括具有内部和外部聚乙烯层的对焊铝管的复合管。焊接铝管能够承受内部压力。由非对焊金属层和聚乙烯以外的塑料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配件规范见 附件A1 . 1.4 本规范不包括交联聚乙烯铝交联聚乙烯管（见规范 F1281 ). 1.5 单位-- 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 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 polyethylene composite pressure pipe with a butt welded aluminum tube reinforcement between the inner and outer layers. The inner and outer polyethylene layers are bonded to the aluminum tube by a melt adhesive. Included is a system of nomenclature for the polyethylene-aluminum-polyethylene of raised temperature (PE-RT/AL/PE-RT) pipes, the requirements and test methods for materials, the dimensions and strengths of the component tubes 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 air conditioning and refrigeration (ACR), underground irrigation systems, radiant panel heating systems, baseboard, snow- and ice-melt systems, and gases that are compatible with composite pipe. 1.2 This specification relates only to composite pipes incorporating a butt welded aluminum tube having both internal and external polyethylene layers. The welded aluminum tube is capable of sustaining internal pressures. Pipes consisting of metallic layers not butt welded together and plastic layers other than polyethylene are outside the scope of this specification. 1.3 Specifications for fittings for use with pipe meeting the requirements of this specification are given in Annex A1 . 1.4 This specification excludes crosslinked polyethylene-aluminum-crosslinked polyethylene pipes (see Specification F1281 ). 1.5 Units— 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 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.