Light steel keel standard

The decisive factors for the quality of light steel keels:
1. High-quality steel strips;
2. Light steel keel forming equipment;
3. The thickness deviation of the light steel keel steel strip;
4. The amount of double-sided galvanizing of the light steel keel;
5. Appearance quality;
6. The meticulous management of the keel manufacturer.
Appearance quality The appearance of the light steel keel should be flat, with clear edges and corners, and the cuts are not allowed to have burrs and deformation that affect the use. The galvanized layer is not allowed to have defects such as peeling, nodules, and shedding. When checking the appearance quality, a visual inspection should be carried out under bright light conditions at a distance of 0.5m from the product.
The surface of the light steel keel should be galvanized for rust prevention, and the double-sided galvanizing amount: the superior product is not less than 120g/m*m