1.1 本规范涵盖了外径受控交联聚乙烯（CX-PE）管，其生产尺寸为DN 25至630，NPS 1至24，具有各种尺寸比。本规范中包括用于确定长期静水压强度、静水压爆裂压力、静水持续压力、紫外线耐候性、初始和最终交联度、工艺和标记的要求和测试方法。 1.2 本规范不适用于交联产品，特别是PEX管。 注1: CX-PE是一种不同于传统PEX材料的名称，特别是在交联速率、安装和调试过程方面。 1.3 本规范涵盖的管道适用于压力和非压力应用。非饮用水、多相混合流体、原油、气体和含有一些水的化学溶液等流体可以在根据本标准制造的管道中运输。 由按照本规范制造的CX-PE管制成的调试管道系统的允许工作温度为 ≤ 200 华氏度[93度 °C]。 1.4 根据本规范生产的管道拟在安装期间或之后进行交联。CX-PE管道安装和交联所用的程序和实践不在本规范范围内。制造商关于CX-PE管道调试的建议用于确保完整管道系统的性能符合设计预期。 注2: 根据本规范制造的管道与根据规范制造的PEX管道之间的差异 F2905 是指最终交联过程作为安装和调试的一部分完成，而不是在制造设施中进行交联。 1.5 本规范包括证明最低服务性能水平的要求。 1.6 根据本规范制造的CX-PE管道的连接不在本规范范围内。有关CX-PE管道连接的指导，请参考实践 F3507 以及制造商的建议。 1.7 本规范参考了注释、脚注和附录，这些注释、脚注和附录提供了非强制性的解释材料。除强制性的表格脚注外，注释、脚注和括号内的信息不应视为本规范的要求。 1.8 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.9 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户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。 1.10 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。

1.1 This specification covers outside diameter controlled crosslinkable polyethylene (CX-PE) pipe produced in sizes DN 25 to 630 and NPS 1 to 24 in various dimension ratios. Included in this specification are requirements and test methods for the determination of the long-term hydrostatic strength, hydrostatic burst pressure, hydrostatic sustained pressure, UV weathering resistance, initial and ultimate degree of crosslinking, workmanship, and marking. 1.2 This specification shall not be applied to crosslinked products, specifically PEX pipe or tubing. Note 1: CX-PE is a different designation separate from conventional PEX materials, specifically with regard to the crosslinking rate, installation, and commissioning processes. 1.3 The pipe covered by this specification is intended for pressure and non-pressure applications. Fluids such as non-potable water, multi-phase mixed fluids, crude oils, gases, and chemical solutions containing some water are allowed to be transported in pipe made in accordance with this standard. Permissible operating temperatures for commissioned piping systems constructed from CX-PE pipe manufactured in accordance with this specification are ≤ 200 °F [93 °C]. 1.4 Pipe produced in accordance with this specification is intended to be crosslinked during or after installation. The procedures and practices to be used for the installation and crosslinking of the CX-PE pipe are outside the scope of this specification. Manufacturer’s recommendations for the commissioning of CX-PE pipe are used to ensure that the performance of the completed piping system meets design expectations. Note 2: The difference between pipes made in accordance with this specification and PEX pipes made in accordance with Specification F2905 is that the final crosslinking process is completed as part of installation and commissioning as opposed to crosslinking taking place in the manufacturing facility. 1.5 This specification includes requirements to demonstrate a minimum level of performance in service. 1.6 Joining of CX-PE pipes made in accordance with this specification is outside the scope of this specification. For guidance on the joining of CX-PE pipe consult Practice F3507 and manufacturer’s recommendations. 1.7 This specification references notes, footnotes, and appendixes, which provide non-mandatory explanatory material. Excluding table footnotes which are mandatory, notes, footnotes and information in parentheses shall not be considered as requirements of this specification. 1.8 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.9 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. 1.10 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.