Uses of different coating structures for color coated sheets:
The corrosion resistance and scratch resistance of single layer back paint of color coated board are poor, but it has good cohesiveness and is mainly used in sandwich board.
The back paint has good corrosion resistance, scratch resistance and processing formability. It has good cohesiveness and is suitable for single-layer profiled and sandwich panels.
Double-layer back paint has good corrosion resistance, scratch resistance and processing formability. Most of it is used for single-layer profiled sheet, but its adhesion is not good, so it is not suitable for sandwich panel.
Inspection of choosing color coated board: Before installing the roof and wall panels, the appearance, size and color difference of the color coated board should be compared first. It must meet the room requirements, the surface of the color coated board should be flat, pollution-free, cracks and scratches. The socket should be straight, the top and bottom are uniform, and no warping phenomenon should be installed.
In conjunction with the supervision company and Party A and the civil construction party, the cement floor is inspected to ensure that the ground meets the requirements of leveling and the position of the pre-buried pipeline is correct. Particular attention should be paid to the combination of the color-coated panel wall and the civil wall, the verticality of the civil wall, the smoothness of the surface treatment of the column and beam in the room, and after the inspection is correct, the line of the purification room should be laid out and positioned.