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Construction Points of Color Steel Sheets
First, there are two types of fixing methods for the installation of hot sale color-coated corrugated roofing sheet: transmissive and concealed. Penetration is the most common way to install roof and wall color steel plates, that is, the self-tapping screws or rivets are used to fix the color plates on the support members, and the penetrating fixation is divided into wave pin fixation, trough fixing or a combination thereof. The concealed fixing is a fixing method in which the special concealed buckle matched with the concealed color plate is first fixed on the support member, and the female rib of the color plate and the central rib of the concealed buckle are fixed, which is generally used for the installation of the roof panel.

Second, the side and end of the color plate overlap. When installing each steel plate, it should be placed on the front steel plate accurately and clamped to the previous steel plate until both ends of the steel plate are fixed. A simple and effective method is to use a pair of jaw clamps to clamp the overlapped steel plates. When the steel plate is placed in the longitudinal direction, the end portion, especially the upper-end portion, needs to be clamped with the gusset portion, so that one end of the steel plate can be seated and the overlap at one end is also in the correct position, thereby fixing the steel plate. During the fixing process, the clamp should always clamp the steel plate in the longitudinal direction.

Third, the details of the installation of the color plate. If you buy PPGI corrugated roofing sheet, be sure to pay attention to its details. For the roof color board, the color board should be correspondingly closed at the roof and the eaves, in order to prevent rainwater from entering the roof more effectively. Where the roofing panel is on the ridge, the edge between the ribs of the steel plate can be folded up with a hemming tool. The edge-closing operation can be carried out before the positioning of the color steel plate, or after the steel plate is installed, but the latter method requires sufficient clearance at the top end of the steel plate to facilitate the operation of the edge-receiving tool.

Fourth, the selection of self-tapping screws. When fixing screws are selected, the fixing parts should be selected according to the service life of the structure, and special attention should be paid to whether the life of the outer covering material is consistent with the life of the specified fixing parts. Also, note that the thickness of the steel string cannot exceed the self-drilling capacity of the screw. Screws are currently available with a plastic head, stainless steel top cover or a special durable protective layer. In addition, except for the concealed fixing screws, other screws are provided with waterproof gaskets, and corresponding special gaskets are provided for the lighting panels and under special wind pressure conditions.
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