1.1 本规范涵盖了搪瓷用钢卷和切割长度。这些钢的成分和加工可以用它们制造搪瓷制品，并在适当的条件下进行搪瓷。钢材分为I型、II型和III型。I型和II型钢分为两种牌号，商用钢和拉拔钢。III型钢无空隙，不需要命名。 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。 1.3 公差见一般要求规范 A568/A568M 和 A635/A635M . 根据订购产品的厚度和宽度应用适当的一般要求规范。 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。

1.1 This specification covers sheet steel in coils and cut lengths for porcelain enameling. The compositions and processing of these steels are such that articles for porcelain enameling may be fabricated from them and, under proper conditions, enameled. The steels are furnished as Type I, Type II, and Type III. Type I and Type II are supplied in two designations, Commercial Steel and Drawing Steel. Type III steel is interstitial-free and does not require a designation. 1.2 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. 1.3 Tolerances are found in General Requirements Specifications A568/A568M and A635/A635M . The appropriate General Requirements specification is applied based on the thickness and width of the product ordered. 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.