1.1 本规范涵盖了工厂组装的无阳极立管和过渡配件的鉴定要求和试验方法，用于尺寸通过NPS 16的聚乙烯（PE）和尺寸通过NPS 6的聚酰胺11（PA11）和聚酰胺12（PA12），气体分配系统。 1.2 所述试验方法并非常规质量控制试验。 1.3 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.4 在本规范中，脚注仅供参考，不应视为本规范的要求。 1.5 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 requirements and test methods for the qualification of factory assembled anodeless risers and transition fittings, for use in polyethylene (PE), in sizes through NPS 16, and Polyamide 11 (PA11) and Polyamide 12 (PA12), in sizes through NPS 6, gas distribution systems. 1.2 The test methods described are not intended to be routine quality control tests. 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 Throughout this specification footnotes are provided for informational purposes and shall not be considered as requirements of this specification. 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.