1.1 本规范涵盖无釉结构粘土非承重筛网瓷砖。 1.2 本规范的性能要求在购买时适用。使用从砌体结构中提取的瓷砖测试结果来确定是否符合性能要求（第节 6. )本规范的规定超出了本标准的范围。 1.3 本规范涵盖的瓷砖由粘土、页岩或类似天然物质制成，并在高温下进行热处理（烧制）。 热处理必须在颗粒成分之间形成足够的烧结结合，以提供本规范的强度和耐久性要求。（参见 点火 和 烧成的债券 在术语中 232加元 ). 1.4 本规范的文本引用了提供解释性材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应被视为规范的要求。 1.5 以英寸磅为单位的数值应视为标准。 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。 1.6 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 unglazed, structural clay, nonloadbearing screen tile. 1.2 The property requirements of this specification apply at the time of purchase. The use of results from testing of tile extracted from masonry structures for determining conformance or nonconformance to the property requirements (Section 6 ) of this specification is beyond the scope of this standard. 1.3 Tile covered by this specification are manufactured from clay, shale, or similar naturally occurring substances and subjected to a heat treatment at elevated temperatures (firing). The heat treatment must develop sufficient fired bond between the particulate constituents to provide the strength and durability requirements of this specification. (See firing and fired bond in Terminology C1232 ). 1.4 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification. 1.5 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 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.