1.1 本规范规定了用于外径受控聚乙烯管和管材的预制配件的要求。这些配件是通过热熔连接由管道、模制配件、板材、钢坯或砌块制备的形状改性聚乙烯部件制造的。包括材料、设计、工艺、最小尺寸、标记、测试方法和质量控制要求。 1.2 装配式配件设计的压力等级超出了本标准的范围，应由配件制造商确定。 1.3 本规范包括高温压力的要求- 在配件制造商规定的压力等级下进行测试。 1.4 压力测试要求由配件的等效（E）DR规定。规定的EDR是管道系统的DR，预制配件将用于对接熔融。 1.5 本标准的文本引用了提供解释性材料的注释和脚注。这些注释和脚注（不包括表格和图表中的注释和脚注）不应被视为本标准的要求。 1.6 单位-- 以英寸-磅单位表示的值应被视为标准值。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准值。 1.7 以下安全隐患警告仅适用于测试方法部分，第节 9 ，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。 1.8 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 establishes requirements for fabricated fittings intended for use with outside-diameter controlled polyethylene pipe and tubing. These fittings are manufactured by heat-fusion joining shape-modified polyethylene components prepared from pipe, molded fittings, sheet, billet, or block. Included are requirements for materials, design, workmanship, minimum dimensions, marking, test methods, and quality control. 1.2 Pressure rating of the fabricated-fitting design is beyond the scope of this standard and shall be established by the fitting manufacturer. 1.3 This specification includes requirements for both elevated temperature pressure-tests at the pressure rating established by the fitting manufacturer. 1.4 The pressure-tests requirements are specified by the fittings’ equivalent (E) DR. The EDR specified is the DR of the piping system for which the fabricated fitting is intended to be butt-fused. 1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.6 Units— The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units which are provided for information only and are not considered standard. 1.7 The following safety hazards caveat pertains only to the test methods 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. 1.8 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.