1.1 提供这些参考照片是为了确定渗透检测方法可检测到的表面不连续性的类型和特征。它们可作为验收标准、规范和图纸的参考。 1.2 实际尺寸，包括显示的最大长度和单位面积显示的数量，必须由本文件的用户指定。没有试图确定可接受性的限制或不连续性的冶金原因。 注1: 这些参考照片的示例如所示 图1- 8. 。 1.3 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 These reference photographs are supplied as a means of establishing types and characteristics of surface discontinuities detectable by the penetrant examination methods. They may be used as a reference for acceptance standards, specifications and drawings. 1.2 Actual dimensions including maximum length of indications and number of indications per unit area must be specified by the users of this document. No attempt has been made to establish limits of acceptability or the metallurgical cause of a discontinuity. Note 1: Examples of these reference photographs are shown in Figs. 1- 8 . 1.3 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.