Surface preparation standard: SSPC/NACE & ISO 8501 (Sa …
Sa 2.5 / 21/2: very thorough spray (Sandblasting) or projectile (shot blasting) to remove rust of Sa 2.5. There should be no visible grease, dirt, oxide scale, rust, paint coating and other attachments on the surface of the steel, and any remaining traces should only be light spots or strips. The projectile dents formed after shot blasting are ...
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