1.1本规范涵盖了通常用于输送冷热流体的柔性预绝缘管道。 1.2本规范规定了用于热水和冷水应用的柔性预绝缘管道的材料和性能要求。 1.3管道系统可包括一个或多个位于公共外护套内的输送管。 1.4本规范的文本引用了提供解释材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应视为本标准的一部分。 1.5 单位- 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。 1.6 以下安全危险警告与本规范第7节试验方法部分有关。 本标准并非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制定适当的安全和健康实践，并确定监管要求的适用性。

1.1 This specification covers flexible, pre-insulated piping commonly used to convey hot and cold fluids. 1.2 This specification establishes materials and performance requirements for flexible, pre-insulated piping intended for hot and chilled water applications. 1.3 Piping systems may include one or more carrier pipes within a common outer jacket. 1.4 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered part of this standard. 1.5 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 that are provided for information only and are not considered standard. 1.6 The following safety hazards caveat pertains to the test methods 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 and health practices and determine the applicability of regulatory requirements prior to use.