Building B, Shenglong Erqi Center,
Xinghua South Street, Erqi District,
Zhengzhou, Henan Province, China
Liya :+86 18703805381
Coating is a process that paints layers of organic materials on the base metal. It makes the metal attractive and corrosion-resistant. Generally, the painting thickness is 10+5 µm (top painting + back painting). It can be customized to 35 µm for special requirements. There are four commonly-used coatings, including polyester (PE), silicone modified polyester (SMP), high durability polyester (HDP), and polyvinylidene fluoride (PVDF). Different coatings have different features and applications. Below are more details for your reference.
PE sheets are easy to process and have good adhesion. There are various colors to choose from. Besides, it’s the most cost-effective coating among other coating types. But its resistance to UV is poor. Therefore, the use of PE coating is limited. Its service life is 7-8 years.
2. Easy to process
4. Poor corrosion-resistance
Considering its good adhesion, PE is often used as a primer coat. While its resistance to corrosion is poor, it doesn’t suit the severe corrosive environment.
It has better heat resistance, durability than PE coating. Its service life is up to 12 years. But it is hard to process, and the adhesion of silicone to the material is not strong.
It is often applied to roofing and exterior walls.
It has better performance than PE and SMP, and its service life is up to 15 years. The ultraviolet absorber and hindered amines (HALS) in the coating formulation can improve the weather resistance of the paint film. High weather-resistant polyester coil coatings have been recognized by the market, and the cost-effectiveness of the coatings is very outstanding.
1. Higher UV resistance
HDP is widely used to power and metallurgical industry, etc.
In addition to chemical resistance, its mechanical properties, UV resistance, and heat resistance are also outstanding. It has the strongest protection. Under normal circumstances, its anti-corrosion life can be as long as 20 to 25 years.
1.Excellent heat resistance
2. Great mechanical properties
3. Good resistance
It is often applied to chemical plants, power plants, and high-speed rail stations due to its excellent corrosion resistance and resistance to UV.
Below is a table to compare the performance.
|Coating Types||Hardness||Strength||Corrosion Resistance||Cost|
As mentioned, there are different types of paints on the market. You can choose a cost-effective one to suit your needs best.
You can also find a lot of paints brand, such as Nippon, Akzo Nobel, etc. You can select the one you like according to your budget.
Durability and heat resistance are influenced by the thickness of the coating. PVDF coating requires a thicker coating film, which makes steel products more durable. It has the best performance. If the environmental conditions are terrible, it is a suitable one for your project.
Color is the first concern for buildings. Your choice is mainly based on the surrounding environment and your preference. Besides, the light color paint has a stronger heat reflection. While dark colors are easy to fade when exposed to ultraviolet rays.
Painting is an affordable and effective method to protect the base metal from rusting and corrosion. It also makes the steel more smooth and beautiful to meet the different requirements for different uses. Wanzhi Steel offers custom solutions, including paints, colors, designs, the thickness of coatings, etc. Welcome to contact us for details!
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