4. Test results: Corrugated plate surface is sandblasted very carefully, showing up the original metal color. The rust stains if left only in trace or piece of yarn, the surface is then cleaned by compressed air dry, or brush clean. Equivalent to the level of Sa 2.5 according to standard SIS 05 5900 (Sweden). 5. Conclusion: the category corrugated panels on meet the technical requirements of cleaning metal surface. Quality assurance for conducting anti rust paint.
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