1.1 本规范涵盖模压玻璃纤维增强石膏（GRG）部件，这些部件是非承重的、薄壁的、用于室内建筑装饰的装饰形状。 1.2 以国际单位制或英寸磅单位表示的数值应单独视为标准。在文本中，国际单位制单位显示在括号中。每个系统中规定的值可能不是精确的等效值；因此，每个系统应独立于其他系统使用。将两个系统的值组合在一起可能会导致不符合标准。 1.3 所提供的信息是指零件的成型表面。 1.4 本标准的文本引用脚注，脚注提供了解释性材料。这些脚注不应被视为本标准的要求。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 This specification covers molded glass fiber reinforced gypsum (GRG) parts, which are nonload-bearing, thin-shell, ornamental shapes for architectural embellishment of interior building construction. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 The information presented refers to the molded surface of the part. 1.4 The text of this standard references footnotes, which provide explanatory material. These footnotes shall not be considered as requirements of the standard. 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.