1.1 本规范涵盖了压力应用中定向聚氯乙烯（PVCO）管的材料、尺寸、持续压力、加速回归试验、爆裂压力、平整度、抗冲击性、工艺、溶剂水泥接头试验和标记方法的要求。 1.2 PVCO管道应使用弹性密封件（垫圈）或带底漆的溶剂粘合剂连接。衬垫接头应符合规范要求 第3139页 弹性密封件应符合规范要求 第477页 溶剂粘结接头应符合 5.3.3 . 1.3 以英寸-磅单位表示的值应视为标准值。括号中给出的值是对SI单位的数学转换，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 7. 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（如有）。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（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers requirements for materials, dimensions, sustained pressure, accelerated regression testing, burst pressure, flattening, impact resistance, workmanship, solvent cement joint testing, and methods of marking for oriented poly(vinyl chloride) (PVCO) pipe for pressure applications. 1.2 The PVCO pipe shall be joined using either elastomeric seals (gaskets) or solvent cement with primer. The gasketed joint shall meet the requirements of Specification D3139 and the elastomeric seal shall meet the requirements of Specification F477 . The solvent cemented joint shall meet the requirements of 5.3.3 . 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 7 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.