Color coated coil is a colored coated steel sheet coil made from cold-rolled steel sheet, galvanized steel sheet and other substrates, coated with organic coating after surface pretreatment, and baked and cured. It has the advantages of lightweight, high strength, corrosion resistance, beautiful appearance, and convenient processing. It is widely used in various industries such as construction, home appliances, transportation, electronics, etc., and is an important material in modern industrial and civil fields.
1、 Construction industry: core application areas, accounting for over 60%
The construction industry is the largest market for color coated rolls, mainly utilizing their weather resistance, decorative properties, and formability, suitable for various enclosure structures and decorative components.
1. Roof and wall system
This is the main application scenario of color coated rolls, which can be processed into products such as profiled steel sheets and sandwich panels, and used for roofs and exterior walls of industrial plants, warehouses, steel structure office buildings, and large venues. Among them, industrial plants often use high weather resistant color coated rolls (substrate is hot-dip galvanized or aluminum zinc coated sheet, coating contains fluorocarbon or high weather resistant polyester resin), which can resist acid rain and ultraviolet radiation, and have a service life of 15-20 years; The exterior walls of civil buildings focus on decoration, often using color coated rolls with different colors and patterns, combined with insulation layers to achieve the unity of energy conservation and aesthetics.
2. Enclosure and decorative components
It can be made into color steel doors and windows, rolling shutter doors, balcony guardrails, canopies, billboard frames, etc. This type of application has high requirements for the processing performance of color coated coils, which need to meet the forming processes such as bending and stamping. At the same time, the coating needs to have good adhesion to avoid paint peeling during the processing. In addition, some high-end buildings’ indoor ceilings and partitions will also use color coated rolls to enhance the aesthetic appeal of the space through customized colors.
2、 Home appliance industry: dual demands for appearance and corrosion resistance
The home appliance industry has strict requirements for the surface smoothness, color consistency, and corrosion resistance of color coated rolls. They are mainly used for home appliance shells and internal components, which can reduce subsequent spraying processes and lower production costs.
1. White goods shell
The box and door panels of refrigerators, the outer shell of washing machines, and the outdoor and indoor unit panels of air conditioners are often made of household appliance specific color coated coils. The substrate is mainly cold-rolled or electroplated galvanized sheet, and the coating is polyester or epoxy polyester resin, which has the characteristics of fingerprint resistance, scrub resistance, and yellowing resistance, and can maintain a smooth appearance for a long time.
2. Small household appliances and kitchen and bathroom appliances
Microwave oven shells, oven liners, water heater shells, cabinet door panels, etc., some of which will use color coated rolls. Among them, color coated rolls for kitchen and bathroom appliances need to have resistance to moisture, heat, and oil stains, and the coating needs to be specially treated to prevent oil fume erosion and water vapor corrosion.
3、 Transportation Industry: Lightweight and Durability Adaptation
The transportation industry has high requirements for the strength and weather resistance of materials. Color coated rolls can be applied to some components of vehicles through reasonable selection, helping to reduce equipment weight.
1. Automotive industry
Mainly used for non load bearing components such as interior panels, trunk partitions, door panels, etc. of automobiles, the selected color coated rolls should have good stamping formability and sound insulation effect, and the coating should meet the environmental standards of automobile interiors, without odor or pollution. The carriage panels of some special vehicles (such as refrigerated trucks and box trucks) will be made of high weather resistant color coated rolls to improve the corrosion resistance and service life of the carriage.
2. Rail transit and logistics equipment
The interior decorative panels of subways and light rails, the side and top panels of containers, as well as the shelves and pallets used for logistics and warehousing, can all use color coated rolls. The color coated coils used in containers must meet the salt spray corrosion resistance requirements of the shipping environment. The substrate is mostly aluminum zinc plated, and the coating is made of fluorocarbon resin, which can resist the erosion of marine atmosphere.
4、 Other fields: Diversifying and expanding applications
1. Electronic and electrical field
Used for the outer shell of distribution cabinets, switch cabinets, and charging stations, this type of color coated roll needs to have insulation and corrosion resistance, and some also need to meet fire and flame retardant requirements to ensure the safe operation of electrical equipment.
2. Furniture and daily necessities field
Can produce metal furniture such as filing cabinets, bookshelves, wardrobes, as well as daily necessities such as trash cans, bicycle baskets, and metal toys. This type of application focuses on cost control and often uses economical color coated rolls to meet diverse market demands through reasonable color matching.
5、 Key considerations for application
1. Coating selection and adaptation scenarios: Fluorocarbon coating (PVDF) has the strongest weather resistance and is suitable for outdoor buildings and marine environments; High weather resistant polyester coating (HDP) has high cost-effectiveness and is suitable for industrial plants; Polyester coating (PE) is suitable for household appliances and interior decoration; Epoxy coating is suitable for indoor components with high corrosion resistance requirements.
2. Substrate matching requirements: Hot dip galvanized substrates focus on corrosion resistance and are suitable for outdoor use; The surface of the electroplated galvanized substrate is smooth and suitable for household appliances; Cold rolled substrates have low cost and are suitable for indoor non corrosion-resistant scenarios.
3. Processing and installation: During the processing of color coated rolls, excessive bending should be avoided to prevent coating cracking. During installation, sealing treatment should be done to prevent water vapor from entering through the incision and causing substrate corrosion.
Post time: Jan-21-2026