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IS 1477 Part I specifies surface preparation grades for steel surfaces before painting. These grades categorize the cleanliness and roughness of the surface, ensuring that it is adequately prepared to promote good adhesion of coatings. The grades range from Sa 1 (lightly cleaned) to Sa 3 (nearly white metal), each with specific visual and cleanliness criteria. Proper surface preparation is crucial for the long-term performance and durability of the protective coatings applied.

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AnswerBot

1mo ago

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