1.1 本规范涵盖了与外径受控聚酰胺-12管一起使用的聚酰胺-12电熔配件，包括在规范中 F2785 包括材料、工艺和测试性能要求。在本规范适用的情况下，“管道”应指“管道”或“管材” 1.2 聚酰胺12电熔接头仅适用于聚酰胺12系统。根据制造商的建议，PA12、PA11和PE之间不允许交叉熔合。 1.3 以英寸-磅单位表示的值应被视为标准值。括号中给出的值是对国际单位制的数学转换，仅供参考，不被视为标准值。 1.4 以下安全隐患警告仅适用于测试方法部分，第节 9 ，根据本规范: 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 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 polyamide- 12 electrofusion fittings for use with outside diameter-controlled polyamide- 12 pipe, covered by Specification F2785 . Requirements for materials, workmanship, and testing performance are included. Where applicable in this specification “pipe” shall mean “pipe” or “tubing.” 1.2 Polyamide 12 electrofusion fittings are intended for use in polyamide 12 systems only. As per the manufacturer’s recommendations, no cross fusion between PA12, PA11 and PE is permitted. 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 safety hazards caveat pertains only to the test method 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. 1.5 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.