Is an aqueous inorganic zinc-rich coating suitable for heating coils?
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There is now an oil sludge tank with a heating coil inside. Now I would like to choose an aqueous inorganic zinc-rich coating, applied in 5 coats, with a total film thickness of not less than 250 microns. Now, paint manufacturers say that water-based inorganic zinc-rich coatings cannot be used for topcoating, so I would like to ask whether it is suitable to use water-based inorganic zinc-rich coatings on heating coils And what about the issues with my accompanying plan?
I also have two sewage tanks, each equipped with an oil-water separator. The anti-corrosion solution I am choosing now is: 2 coats of 100-micron epoxy zinc-rich primer as the base coat, and 1 coat of 200-micron epoxy glass flake anti-corrosion coating as the top coat. Is it appropriate or not? And the reason?