Q235A Grade Prepainted Galvalume Steel Coil
Coating thickness selection: according to the experimental results, the front coating ≥20 micron can effectively prevent the invasion of corrosive media, because of the different corrosion prevention mechanism of primer and finish, so we need to respectively require the primer (≥5 micron) and finish (≥15 micron) thickness, only in this way, to ensure that different parts of the color coating steel corrosion resistance is balanced.Q235A Grade Prepainted galvalume steel coil
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