1.1 本规范涵盖通过双辊铸造工艺生产的商业、结构、高强度低合金和超高强度钢卷和切割长度。 1.2 钢板具有第节中列出的名称 4. . 1.3 材料有以下尺寸: 厚度: 0.027至0.078英寸。[0.7至2.0毫米] 宽度: 高达79英寸。[2000毫米] 1.4 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。 将两个系统的值合并可能会导致不符合标准。 注1: 双辊铸轧工艺的描述包括在 附录X1 . 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。

1.1 This specification covers commercial, structural, high-strength low-alloy, and ultra-high strength steel sheet in coils and cut lengths produced by the twin-roll casting process. 1.2 The steel sheet is available in the designations listed in Section 4 . 1.3 The material is available in the following sizes: Thickness: 0.027 to 0.078 in. [0.7 to 2.0 mm] Width: up to 79 in. [2000 mm] 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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. Note 1: A description of the Twin-roll Casting Process is included in Appendix X1 . 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.