Prepainted steel sheet is widely used in construction, such as roofing, siding, wall cladding, fencing, etc. As building materials, especially roofing and wall panels, there are requirements for safety, durability, appearance retention, easy maintenance, etc.
Besides, the requirements for different building uses are also different. For example, for civil buildings, safety and service life are the most important. While for public buildings, the appearance, service life, and bearing capacity are more important. Below let's review how to choose pre-painted steel sheets for construction.
The following factors need to be considered when selecting pre-painted steel sheets for construction uses:
1. Substrate type and grades, including the yield strength, tensile strength, and elongation of the base metal;
2. Coating, such as the coating thickness, adhesion, and coating types (GI, GL, ZAM, etc.);
3. Paint, including the color difference, gloss, T-bending test, impact test, hardness, chalk resistance, heat and humidity resistance, etc.
4. Whether the surface has visible surface defects, matte or glossy finish, embossed or plain surface, etc.
5. Design, including the tolerance, roughness of the surface, etc.
PPGI Sheet Use
