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Esta norma conjunta abrange o uso de abrasivos para jateamento com o objetivo de atingir um grau definido de limpeza de superfícies de aço antes da aplicação de um revestimento protetor ou um sistema de revestimento. Esta norma destina-se ao uso por especificadores, aplicadores, inspetores de cobertura ou revestimento ou outros que venham a ser responsáveis por definir um grau padrão de limpeza de superfície.
O foco desta norma é o jateamento abrasivo brush-off. O jateamento abrasivo ao metal branco, o jateamento abrasivo ao metal quase branco, o jateamento abrasivo comercial e o jateamento abrasivo industrial são abordados em normas separadas.
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This standard, SSPC-SP 7 (WAB)/NACE WAB-4, defines the "Brush-Off" level of surface cleanliness for wet abrasive methods. One of five wet abrasive (WAB) levels: (White Metal, Near-White Metal, Commercial, Industrial, Brush-Off)
Requirements for "Brush-Off" - one of five levels of cleanliness of steel surfaces achieved by blast cleaning with the use of abrasives. (White Metal, Near-White Metal, Commercial, Industrial, Brush Off)