The surface of steel interior door is made with high-quality colored coating steel plate. The surface steel plate thickness is 0.5mm, and can also be increased as per your requirement. With galvanized steel plate as the base plate, it is made through degreasing, cleaning, chemical conversion, primer painting and finish painting. The coanting thickness is greater than 20um, having good weatherproof nature, corrosion resistance, flexibility and glossiness. The interral of steel interior door is composed of polyurethane or solid polystyrene foam can ensure absolute heat insulation.

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