1.1 本规范涵盖了现有下水道和管道修复用折叠聚氯乙烯（PVC）管道的材料、尺寸、工艺、抗压扁性、抗冲击性、管道刚度、挤压质量和标记形式的要求和试验方法。 1.2 根据本规范生产的折叠PVC管用于无压下水道和管道修复，其中折叠PVC管插入并扩张，以符合原始管道的壁，形成新的管内管。 注1: 有关安装程序和工程设计注意事项，请参考实践 F1947 . 1.3 本规范包括仅由第节中规定的材料制成的折叠PVC管 6. 本规范不包括由再加工、再生或再生PVC制成的折叠管。 1.4 以英寸-磅单位表示的数值应视为标准值。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。 1.5 以下预防性说明仅适用于第节测试方法部分 11 ，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）。 本标准的用户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。 1.6 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 materials, dimensions, workmanship, flattening resistance, impact resistance, pipe stiffness, extrusion quality, and a form of marking for folded poly(vinyl chloride) (PVC) pipe for existing sewer and conduit rehabilitation. 1.2 Folded PVC pipe produced to this specification is for use in non-pressure sewer and conduit rehabilitation where the folded PVC pipe is inserted into and then expanded to conform to the wall of the original conduit forming a new pipe-within-a-pipe. Note 1: For installation procedures and engineering design considerations refer to Practice F1947 . 1.3 This specification includes folded PVC pipe made only from materials specified in Section 6 . This specification does not include folded pipe manufactured from reprocessed, recycled, or reclaimed PVC. 1.4 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. 1.5 The following precautionary statement pertains to the test method portion only, Section 11 , 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. 1.6 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.