WAB清洁表面是通过以下几种方法之一在喷砂清理操作中结合水和磨料制备的表面，包括1）磨料流离开喷砂喷嘴时，向磨料流内部或外部注入水；2） 向加压水中注入磨料；或3）在压力下使用研磨料浆，以达到规定的WAB清洁度。本标准规定了通过使用湿式喷砂清理实现的未涂层或涂层钢表面可见表面清洁度的刷除湿式喷砂清理（NACE WAB-4/SSPC-SP 7[WAB]）。 这些要求包括通过目视检查确定的表面终态，以及用于实现和验证终态的材料和程序。本标准仅限于对可见表面污染物的要求。附录A第A2段中提供了不可见污染的附加信息。SSPC指南15中提供了可溶盐测试的附加信息。

A WAB-cleaned surface is one prepared by combining water and abrasive in a blast cleaning operation by one of several methods, including 1) injection of water into the abrasive stream either internally or externally as the abrasive stream exits the blast nozzle; 2) injection of abrasive into pressurized water; or 3) use of an abrasive slurry under pressure to achieve the specified WAB degree of cleanliness.This standard defines the Brush-Off Wet Abrasive Blast Cleaning (NACE WAB-4/SSPC-SP 7 [WAB]) degree of visible surface cleanliness of uncoated or coated steel surfaces achieved by the use of wet abrasive blast cleaning. The requirements include the end condition of the surface as determined by visual inspection, and materials and procedures used to achieve and verify the end condition.This standard is limited to requirements for visible surface contaminants. Additional information on nonvisible contamination is provided in Paragraph A2 of Appendix A. Additional information on soluble salt testing is provided in SSPC-Guide 15.