430 Prepainted Zn-Al-Mg Steel Coil
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430 Prepainted Zn-Al-Mg Steel Coil

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Product Details:


Standard

EN10324, JIS G 3323-2012, ASTM A 1046, etc.

Material thickness

0.25~4.0mm

Material width

550~960mm

Coating weight

20g/m2~400g/m2

The content of aluminum and magnesium are 2 kinds of combinations,

which are low aluminum and low magnesium medium aluminum and medium magnesium,

that is, 1.5 magnesium 2 aluminum, 3 magnesium 6 aluminum.

Surface treatment can be consulted in detail.

Delivery

7-30 days

Payment Method

TT/LC

Port

Tianjin Xingang Port



Prepainted zinc-aluminum-magnesium coil is a high-end building material coated with a zinc-aluminum-magnesium alloy layer on the steel surface. It has excellent corrosion resistance and weather resistance. It is widely used in building roofs, walls, carriages, home appliances and other fields. 

The following are the general steps of the production process of prepainted zinc-aluminum-magnesium coils:

Raw material preparation: Select high-quality cold-rolled steel plate as the base material, and prepare coating materials, such as zinc-aluminum-magnesium alloy paint, primer and back paint, etc.

Cleaning and surface treatment: Send the steel plate into the pickling tank, and remove oxides and impurities on the surface through processes such as pickling and oil removal. Next, an activation treatment is performed to improve the adhesion between the coating layer and the substrate.

Coating process: The zinc-aluminum-magnesium alloy coating is evenly coated on the surface of the substrate through a coating machine to form a coating with a certain thickness. The coating process may include multiple coats, such as primer and backcoat, to enhance the quality and performance of the coating.

Curing and drying: The coated substrate is sent into a drying oven, and the solvent in the coating is volatilized by heating, and the coating is cured. This step can control the temperature and drying time through a hot air circulation system to ensure the ideal performance of the coating.

Cooling and cutting: After the coating is solidified, the substrate is quickly cooled through a cooling device to control the structure and performance of the coating. Next, the substrate is cut into rolls of required sizes for subsequent processing and use.

Inspection and packaging: Send the cut coils to the inspection area for quality inspection, including appearance inspection, coating thickness test, adhesion test, etc. After passing the inspection, the coiled materials will be packaged, labeled, classified and stored to facilitate transportation and sales.


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