1.1 本规程涵盖标准系列耐火砖的尺寸（毫米）和所有成分的形状。 1.2 包括将成型耐火制品的所有其他尺寸从英寸-磅转换为国际单位制的标准方法。 1.3 以国际单位制表示的数值应视为标准值。括号中给出的值仅供参考。 1.4 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====== 3.1 本规程旨在促进标准耐火砖和形状的尺寸规程从英寸-磅单位过渡到公制（SI）单位。 3.2 标准尺寸基于38毫米模块（相当于1.5英寸）并旨在保持主要矩形耐火材料形状尺寸之间的模块关系。

1.1 This practice covers dimensions in millimetres for standard series refractory brick and shapes of all compositions. 1.2 A standard method for converting all other dimensions of shaped refractory articles from inch-pound to SI units is included. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.4 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 ====== 3.1 This practice is provided in the interest of facilitating the transition of dimensional practice for standard refractory brick and shapes from inch-pound units to metric (SI) units. 3.2 The standard dimensions are based on a 38-mm module (taken as the equivalent to 1.5 in.) and are developed with the aim of preserving a modular relationship between the dimensions of the principal rectangular refractory shapes.