Penetration fastening is the most common way to install color steel plates on ceilings and walls, that is, use self tapping screws or rivets to fix the color plates on supports (such as belts), penetration fixed ridge fastening, fixed channels or their combination. The concealed buckle of concealed buckle includes first fixing the special concealed buckle bonded dark color plates on supports (such as watch straps), and then fixing the mother rib of the color plate and the middle rib of the concealed buckle, It is generally used for the installation of ceiling slab.
The edge of color steel overlaps with the end. When installing each steel plate, the edge must be accurately positioned on the old steel plate and clamped with the old steel plate until both ends of the steel plate are fixed. A simple and effective method is to clamp the overlapping steel plates with a pair of clamps. When the steel plate is in place longitudinally, its end, especially the upper end, shall be clamped with pliers to ensure that one end of the steel plate is in place and the lap joint at one end is also in the correct position. So as to fix the steel plate. In the process of fixing, the fixture should always clamp the steel plate longitudinally. Before installing the next steel plate, each steel plate must be completely fixed. The fastening should start from the center of the steel plate, then stretch to both sides, and finally fix the overlapping edge of the steel plate. For the last lap, because the ceiling and wall plates are manufactured through continuous processing, Therefore, the steel plate can be supplied according to the length limited by the transportation conditions. Generally, there is no need to overlap, and the length of the steel plate is enough to meet the needs of the roof.
For the consideration of on-site handling and transportation, if necessary, two shorter steel plates can be used to cover the whole length by overlapping the ends. The overlapping sequence of each row of steel plates is from bottom to top, and then the next row is inserted. The ends of steel roof and wallboard are overlapped by inserting fastening method, which must be placed on the support. For the roof with a slope between 1 / 12 (50) and 1 / 4 (150), The lap length of steel plate ends shall be at least 200mm; When the slope exceeds 1 / 4 (150), the lap length shall be at least 150mm, and the midpoint of the lap at the steel plate end must be in the center of the support. The minimum overlap length of wall panels is 100mm.
Selection of self tapping screws. When selecting the fixing screws, the fixing parts shall be selected according to the service life of the structure. In particular, pay attention to whether the service life of the covering materials is consistent with the specified service life of the fixing parts. At the same time, please note that the thickness of the steel strip shall not exceed the self drilling capacity of the screws. The currently available screws can have plastic heads, stainless steel covers, or be coated with special durable protective coatings, In addition, except for the snap fixing screws, other screws are equipped with waterproof washers and corresponding special washers for special wind pressure of solar panels.
The installation of color steel plate is easy to understand, and the treatment of some details is important. For the color steel plate used for the roof, the color steel plate shall be trimmed at the roof and eaves to more effectively prevent rainwater from entering the roof.