1.1 本规范涵盖三种等级的用于电气绝缘的氯乙烯聚合物或其与其他材料的共聚物的非刚性管，如下所示: 1.1.1 A级- 一般用途。 1.1.2 B级- 低温。 1.1.3 C级- 高温。 1.2 本标准和IEC-60684-3-100至-105涉及相同主题，但技术内容不同。 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 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 nonrigid tubing of vinyl chloride polymer or its copolymers with other materials for use in electrical insulation in three grades, as follows: 1.1.1 Grade A— General-purpose. 1.1.2 Grade B— Low-temperature. 1.1.3 Grade C— High-temperature. 1.2 This standard and IEC-60684-3-100 to -105 address the same subject matter but differ in technical content. 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 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.