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Producing the proper surface profile on a blasted metal surface is important with corrosion control process because it ensures the protective coating’s longevity on structural steel.
If the surface profile doesn’t have an adequate peak-valley height, it may not be able to provide a proper anchor for the coating. This can cause the coating to bubble up or fail prematurely. If there is too large a profile (higher peaks and lower valleys on the steel surface), it will require a greater amount of paint to cover the surface without any noticeable roughness.