What kind of steel does color-coated GI steel plate belong to?

Color-coated GI steel plate refers to steel with an organic coating (such as polyester coating, fluorocarbon coating, etc.) coated on the surface of galvanized steel plate (GI plate). This kind of steel is further enhanced by the coating process on the basis of galvanized steel plate, and its corrosion resistance, weather resistance and aesthetics are widely used in construction, home appliances, automobiles and other industries.

Definition of color-coated GI steel plate

Color-coated GI steel plate, also called color-coated galvanized steel plate, refers to steel with one or more layers of organic coating coated on the surface of galvanized steel plate (GI plate) by spraying, rolling and other methods. Galvanized steel plate is prevented from corrosion by immersing the steel plate in a molten zinc pool to form a zinc coating. On the basis of galvanized steel plate, color-coated GI steel plate further adds one or more layers of coatings, which not only have decorative effects, but also enhance the corrosion resistance and UV radiation resistance of steel.

There are various types of coatings for color-coated GI steel sheets, including polyester coating (PE), fluorocarbon coating (PVDF), modified polyester coating (SMP), silicon-modified polyester coating (SMP), etc. Different types of coatings vary in terms of protection effect, weather resistance, UV resistance, etc. Users can choose appropriate color-coated GI steel sheets according to actual needs.

Classification of color-coated GI steel sheets

According to different application requirements, color-coated GI steel sheets can be classified according to coating types, uses and performance:

Classification of coating types

Polyester coating (PE): Polyester-coated color-coated steel sheets have a smooth surface, bright color, and good corrosion resistance. Commonly used in construction fields such as home appliance housings, curtain walls and roofs.

Fluorocarbon coating (PVDF): Fluorocarbon-coated color-coated steel sheets have excellent weather resistance and UV resistance, and are suitable for high-demand building facades and steel structure components exposed to outdoor environments for a long time.

Polyurethane coating (PU): Polyurethane coating is suitable for occasions requiring high wear resistance and scratch resistance, such as automotive interiors and some home appliance components.

Classification by use

Color-coated steel plates for construction: used for building exterior walls, roofs, doors and windows, sunshades, etc., with beautiful and corrosion-resistant characteristics.

Color-coated steel plates for home appliances: mainly used for the shells of home appliances such as refrigerators, air conditioners, washing machines, etc., which can enhance the appearance while providing durability.

Color-coated steel plates for automobiles: used for automobile exterior parts, such as body and interior, etc., with high requirements for UV resistance and weather resistance of the coating.

Classification by performance

Ordinary color-coated steel plates: mainly used for applications in general environments, with low requirements for corrosion resistance.

Weather-resistant color-coated steel plates: have strong corrosion resistance in special environments (such as humid, acidic and alkaline environments, etc.).

Heat-resistant color-coated steel plates: suitable for high temperature environments, the coating can withstand a certain amount of heat and is not easy to fall off.

Advantages of color-coated GI steel plates

Excellent corrosion resistance

One of the biggest advantages of color-coated GI steel plates is their excellent corrosion resistance. Color-coated steel plates are based on the protective effect of galvanized steel plates, and the coating further enhances their weather resistance and corrosion resistance, enabling them to adapt to complex environmental conditions and extend their service life.

Strong aesthetics

The coating of color-coated GI steel plate can provide a rich color selection, and has a smooth surface and excellent decorative effect. It can not only meet the requirements for aesthetics in the fields of construction, home appliances, etc., but also enhance the market appeal of the product.

UV resistance and aging resistance

The color-coated steel plate has been treated with a special coating and has strong UV resistance and aging resistance. It can effectively resist solar radiation, avoid fading and aging, and ensure the long-term appearance stability of the product.

Environmental protection

The production process of color-coated GI steel plate is relatively environmentally friendly, because the paint used in the coating process meets environmental protection requirements. At the same time, the service life of the color-coated steel plate is long, which reduces the need for frequent replacement, thereby reducing resource waste.

Application fields of color-coated GI steel plate

Color-coated GI steel plate has a wide range of applications in modern industry, mainly in the following fields:

Construction field

Color-coated GI steel plate is often used in building exterior walls, roofs, partitions, decorative panels, etc. It can not only enhance the appearance of the building, but also provide effective protection against the erosion of natural elements such as wind, rain, and ultraviolet rays.

Home appliance industry

In the home appliance industry, color-coated steel sheets are important materials for the outer shells of appliances such as refrigerators, air conditioners, and washing machines. Its excellent decorative and corrosion resistance make home appliances have significant advantages in appearance and durability.

Automotive industry

Color-coated steel sheets are widely used in automobile shells and interiors. Its beautiful appearance and strong corrosion resistance make color-coated steel sheets an ideal choice for automobile manufacturers.

Other industries

Color-coated GI steel sheets are also widely used in solar equipment, storage facilities, industrial equipment shells and other fields, meeting the needs of different industries for material performance and appearance.

Conclusion

Color-coated GI steel sheets are a high-performance, multifunctional steel material that combines the anti-corrosion properties of galvanized steel sheets with the beauty and weather resistance of multiple coatings. Its wide application in multiple industries such as construction, home appliances, and automobiles proves its important position in modern industry. With the continuous advancement of technology and the improvement of environmental protection requirements, color-coated GI steel sheets will play a more important role in future applications.