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DX53D AZ180 ASTM A792 COIL GALVALUME ALUZINC STEEL COIL PPGL STEEL COIL GALVALUME METAL ROOF Quick Detial: Grade As per ASTM A792, JIS G3321,EN 10346 DX51D+AZ/DX52D+AZ/DX53D+AZ etc AZ coating 20-275g...