First, the appropriate screw type
Light steel edge keel is one of the most widely used products in light steel keel series, which has the advantages of simple installation, light weight and high strength. When installing on the wall, the light steel side keel needs to be fixed with screws. Common types of screws are self-tapping screws and dry hanging screws.
(1) Self-tapping screw
The head of the self-tapping screw is large, which can directly fix the keel on the wall. This screw does not need to drill, directly screw into the wall can be. However, the self-tapping screws are easy to deform the light steel edge keel, especially in the low temperature environment in winter. Therefore, in the use of self-tapping screws need to pay attention to select smaller specifications, and maintain the appropriate force to prevent the keel bending.
(2) Dry hanging screws
The head of the dry hanging screw is small, and it is necessary to drill a hole in the wall before the screw is screwed in. Dry - hanging screws are more stable than self - tapping screws to fix light steel - edged keels. However, the installation of dry hanging screws requires additional tools and time, and problems such as screw slippage and wall cracking may occur if the screws are not properly operated.
Second, the use of precautions
Whether self-tapping or dry-hanging screws are used, the following precautions should be taken:
(I) Determine the screw position
Before installing the light steel edge keel, it is necessary to determine the location and number of screws. Generally, the two ends of the light steel edge keel are fixed at the corner respectively, and the middle interval is fixed at a certain distance. After determining the screw position, you need to mark the wall with a pencil.
(2) Appropriate use of expansion pipe
When choosing dry hanging screws to fix light steel side keel, some wall materials are loose or not easy to fix. In this case, the expansion tube can be embedded into the hole after drilling, and then screw in. The expansion tube can enhance the fixing effect and improve the load-bearing capacity of the wall.
(3) Pay attention to the intensity and depth
No matter what kind of screw you choose, you need to pay attention to strength and depth. If the force is too large when screwing, the light steel edge keel may be deformed or deformed, resulting in uneven wall surface. If the force is too small when screwing, it may cause the light steel side keel to be loose and unable to be fixed on the wall. At the same time, it is necessary to pay attention to the depth of the screw to ensure firm fixation.
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