1.1 本规程涵盖了“玻璃纤维”（玻璃纤维增强热固性树脂）管的外径、内径、总壁厚、增强壁厚、衬里厚度（如适用）和长度尺寸的测定。包括测量拟通过锥形套筒接头连接的管道的锥形尺寸和锥角的程序，以及测量内螺纹和外螺纹的程序。 1.2 本规程还包括确定玻璃纤维管件尺寸的程序。 1.3 以英寸-磅为单位的数值应视为标准值。括号中给出的国际单位仅供参考。 注1: 没有已知的ISO等效于本标准。 1.4 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、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《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。 ====意义和用途====== 4.1 本规程规定了测定玻璃纤维管和配件的物理尺寸。本规程适用于确定尺寸是否符合产品规范。

1.1 This practice covers the determination of outside diameter, inside diameter, total wall thickness, reinforced wall thickness, liner thickness (where applicable), and length dimensions of “fiberglass” (glass-fiber-reinforced thermosetting resin) pipe. Included are procedures for measuring tapered dimensions and taper angles for pipe intended to be joined by tapered socket fittings, and procedures for gaging internal and external threads. 1.2 This practice also includes procedures for determining dimensions for fiberglass pipe fittings. 1.3 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only. Note 1: There is no known ISO equivalent to this 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. ====== Significance And Use ====== 4.1 This practice provides for determining the physical dimensions of fiberglass pipe and fittings. This practice is suitable for determination of dimensional compliance with product specifications.