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How to choose color-coated rolls?

2024-01-09 11:10:16
How to choose color-coated rolls?

Color-coated coils are made of cold-rolled steel and galvanized steel as the base material. After continuous surface pretreatment, they are baked and cooled.

Color coated board uses:
Color-coated boards are widely used and have the characteristics of no pollution, weather resistance, corrosion resistance, and high processability.
Color-coated boards are generally widely used in industry, construction, home appliances, shipbuilding, automobile manufacturing, packaging, machinery and other fields.
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Color-coated board not only has beautiful appearance and excellent performance, but also has good weather resistance and durability. However, it is very important to choose the appropriate color-coated panels to ensure project quality and budget. Therefore, when choosing color-coated boards, the following factors should be fully considered to ensure that the application of color-coated boards is reasonable and effective.

1. Environmental conditions:
When choosing color-coated boards, you first need to consider the environmental conditions of the area, especially the effects of factors such as humidity, air pollution, UV radiation, and salt rain.
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Taking industrial areas or coastal areas as an example, their service life will be affected due to accelerated corrosion due to the action of sulfur dioxide gas or salt in the atmosphere. In places that have been wet by rain for a long time or have excessive temperature differences during the day, the coating is prone to rust during the rainy season, reducing its service life. Therefore, it is necessary to choose color-coated boards with strong weather resistance and durability.

1. Coating type and coating thickness:
The types of coatings currently used for color-coated boards include polyester coating (PE), silicon modified coating (SMP), high weather-resistant coating (HDP), fluorocarbon coating (PVDF), etc.

Ordinary polyester (PE)
PE coatings have good adhesion to materials. Color-coated boards are easy to process and shape. They are cheap and have many products. There is a wide choice of colors and glosses. Under direct exposure to the general environment, its corrosion protection life can be as long as 7-8 years, but in industrial environments or areas with serious pollution, its service life will be relatively reduced.

Silicone modified polyester (SMP)
Silicone-modified polyester coating provides better durability for steel plates, and its corrosion protection life can be as long as 10-12 years. However, its adhesion to the material and processability are not ideal, so it is not suitable for occasions that require multiple molding processes. Most of them are used in building roofs and exterior walls.

High weather-resistant polyester (HDP, High durable Polyster)
The weather-resistant polyester coating can reach 60-80% of the PVDF coating and is better than ordinary silicon-modified polyester coating. Its outdoor weather resistance can reach 15 years.

PVDF Fluorocarbon
PVDF fluorocarbon coating has very good corrosion resistance and color retention. It is the most advanced product among color-coated steel plate coatings for the construction industry, and its mechanical properties, ultraviolet resistance and heat resistance are also outstanding. Under normal circumstances, its corrosion protection life can reach 20-25 years.

1. Budget:
When choosing color-coated boards, budget is also a factor to consider. The price of color-coated boards varies depending on factors such as materials, specifications, production processes, etc. Therefore, it is necessary to choose the appropriate color-coated boards according to budget constraints.

GNEE Group provides one-stop steel services, controls the futures market, ensures product quality, and wholeheartedly provides customers with matching color-coated plates.

4. Service support:
When choosing color-coated boards, you need to consider whether the manufacturer provides complete service support. If there are quality problems with the selected color-coated boards, is the manufacturer willing to provide solutions?

GNEE Group has been in the steel industry for 16 years. We have always insisted on being customer-centered, adhering to the purpose of "quality builds the future, innovation drives development", and is committed to providing customers with high-quality steel products and services, constantly innovating, and continuously Go beyond yourself.


In general, when choosing color-coated boards, you need to fully consider many factors to ensure that you choose the appropriate color-coated boards to achieve better project results and budget benefits. GNEE Group is based on integrity and quality, and looks forward to working with you tomorrow!