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Everything you need to know about galvanized steel

Oct 10, 2023

1. What is galvanized steel?

According to the definition of galvanizing, we can understand galvanized steel as an object with a zinc-iron coating protecting the base material made of steel. The coating created by the galvanizing process enhances the durability and strength of the steel itself by protecting against corrosion. It also changes the appearance of steel by giving it a solid appearance. Overall, after the galvanizing process, steel becomes stronger and less susceptible to scratches and corrosion; this makes it an ideal material for outdoor use.

 

2.Application of galvanized steel in construction industry

 

Building curtain wall

Galvanized steel is widely used in building curtain walls. Curtain wall is the exterior wall of a building, which requires materials with excellent corrosion resistance and weather resistance. The zinc layer on the surface of galvanized steel can effectively protect the curtain wall from the erosion of the natural environment, while also extending the service life of the curtain wall.

 

Steel structure building

Steel structure buildings are an important development direction of modern architecture. In steel structure buildings, galvanized steel is one of the most commonly used materials. Its excellent processing performance and corrosion resistance make steel structure buildings more stable, safe and durable.

 

Building roof

The roof of a building is the part that comes into early contact with natural environments such as rain and sunlight, and requires materials with excellent weather resistance and corrosion resistance. The surface zinc layer of galvanized steel can effectively protect the roof from the erosion of the natural environment, while also extending the service life of the roof.

 

Pipeline system

Galvanized steel can also be used to manufacture piping systems, such as water supply and drainage pipes, fire protection pipes, etc. In these fields, the corrosion resistance and environmental protection performance of galvanized steel coils are fully reflected.

 

galvanized steel sheet in coil

 

3. Practical advantages of galvanized steel

 

A. Low initial cost

Galvanized steel is easier to use after delivery than most treated steel. No additional preparation, inspection or treatment of the surface (e.g. painting/coating) is required. Therefore, you don’t need to pay any additional costs beyond the cost of galvanized steel.

 

b. Low long-term maintenance costs

Due to its protective zinc coating, galvanized steel requires less maintenance than other untreated steel, yet still maintains its excellent condition and appearance. This is why galvanized steel is the cheapest material in the long run, although there is an alternative coating that has a lower initial cost. In this case, additional costs for maintenance or replacement have not yet been calculated.

 

c. Zinc acts as a sacrificial anode

The fact that zinc acts as a sacrificial anode ensures that any damage will be dealt with by the surrounding coating. No matter what happens, the galvanized coating will still be the first to be damaged and will corrode in preference to the steel.

 

d. Perfect protection

With galvanized steel (especially hot-dip galvanized), even sharp corners, recesses and inaccessible areas are well protected by the zinc coating. Therefore, galvanized steel provides comprehensive protection that other coatings cannot.


In short, galvanized steel coils have excellent corrosion resistance, weather resistance, processing performance and environmental protection performance, and are widely used in the construction industry. With the continuous development of the construction industry, the application prospects of galvanized steel coils will be broader. Let us look forward to the emergence of more beautiful architectural works and witness the infinite possibilities that galvanized steel brings to a better life!