1.1 本规范涵盖了燃气管道用聚酰胺11管、卡套管和配件的特性要求和试验方法。本规范涵盖的管道和配件旨在用于燃气的分配和传输。 1.1.1 本规范不包括螺纹管。通用融合指南见 附录X1 。中讨论了设计注意事项 附录X2 厂内质量控制程序在 附件A1 。 1.2 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。 注1: 符合本标准要求的PA11管道及管件的热熔连接仅限于符合本标准规定的PA11管及管件。 符合本标准要求的PA11管道和管件的热熔连接不允许用于由任何其他热塑性材料制成的管道和管件（例如，PA12、PE、PVC等）。 1.3 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。 1.4 以下是本规范附件和附录的索引: 附件 主题 附件A1 12英寸以下尺寸的厂内质量控制。 附件A2 PA-11熔接接头 附录 主题 附录X1 PA-11管道对接熔接指南 附录X2 设计考虑 1.5 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。 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 requirements and test methods for the characterization of polyamide 11 pipe, tubing, and fittings for use in fuel gas pipelines. The pipe and fittings covered by this specification are intended for use in the distribution and transmission of fuel gases. 1.1.1 This specification does not cover threaded pipe. Generic fusion guidelines are given in Appendix X1 . Design considerations are discussed in Appendix X2 . In-plant quality control programs are specified in Annex A1 . 1.2 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. Note 1: Heat fusion joining of PA11 pipe and fittings meeting the requirements of this standard is limited to PA11 pipe and fittings meeting the requirements of this standard. Heat Fusion joining of PA11 pipe and fittings meeting the requirements of this standard is not allowed to pipes and fittings made from any other thermoplastic materials (for example, PA12, PEs, PVCs, etc.). 1.3 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. 1.4 The following is an index of the annexes and appendixes in this specification: Annexes Subject Annex A1 In-Plant Quality Control for sizes up to 12 in. Annex A2 PA-11 Butt Fusion Fittings Appendixes Subject Appendix X1 Butt Fusion Guidelines for PA-11 Piping Appendix X2 Design Consideration 1.5 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. 1.6 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.