1.1 本规程涵盖了通过目视检查对钢铸件进行表面检查的验收标准。提供了四级验收标准。 1.2 验收水平利用铸钢件研究和贸易协会（SCRATA） 2. 用于目视测定表面纹理、表面粗糙度和表面不连续性的分级参考比较器，描述如下: 验收水平 A–表面纹理 B–非金属夹杂物 C–气体孔隙度 D–凝固不连续性 E–砂膨胀不连续性 F–金属插件 G–热切割表面 H–机械处理表面 J–焊接表面 1.3 与铸件不连续性相关的术语描述见第节 2. . 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 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 practice covers the acceptance criteria for the surface inspection of steel castings by visual examination. Four levels of acceptance standards are provided. 1.2 Acceptance levels utilize Steel Castings Research and Trade Association (SCRATA) 2 graded reference comparators for the visual determination of surface texture, surface roughness, and surface discontinuities described as follows: Acceptance levels A – Surface Texture B – Nonmetallic Inclusions C – Gas Porosity D – Solidification Discontinuities E – Sand Expansion Discontinuities F – Metal Inserts G – Thermally Cut Surfaces H – Mechanically Prepared Surfaces J – Welded Surfaces 1.3 Descriptions of terms related to casting discontinuities are in Section 2 . 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 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.