本标准涉及表面的几何不规则性。它定义了表面纹理及其组成部分:粗糙度、波纹度和铺层。它还定义了用于指定表面纹理的参数。本标准中的术语和等级涉及通过研磨、铸造、涂层、切割、蚀刻、塑性变形、烧结、磨损、侵蚀等方式产生的表面，适用于设计、制图、机械、制造、生产、工具/量规、质量、工艺和项目工程师、CAD/CAM/CAE专家、检查员和全球制造业的教育工作者。特别强调航空航天、汽车、医疗器械、精密仪器及相关行业。

This Standard is concerned with the geometric irregularities of surfaces. It defines surface texture and its constituents: roughness, waviness, and lay. It also defines parameters for specifying surface texture. The terms and ratings in this Standard relate to surfaces produced by such means as abrading, casting, coating, cutting, etching, plastic deformation, sintering, wear, erosion, etc.Intended fordesign, drafting, mechanical, manufacturing, production, tool/gage, quality, process and project engineers, CAD/CAM/CAE specialists, inspectors and educators across a broad range of global manufacturing. Special emphasis on aerospace, automotive, medical device, precision instrumentation and related industries.