Wanzhi - Galvanized Sheet

We have plain and profile galvanized sheet for sale, including corrugated, trapezoidal designs, etc. Below are some basic parameters for your reference.

• Thickness 0.12 to 4.0 mm
• Width 600 to 2,000 mm
• Spangle Zero spangles, Small spangles, Regular spangles, Big spangles
• Zinc Coating Thickness 30-275 g/m2
• Standard AISI, ASTM, BS, DIN, GB, JIS
• Certificates SGS, BV, ISO 9001
• Packaging Standard Export Package
• Delivery Time 10-25 Working Days after Payment

During the production process, the galvanised iron sheets will be with zero spangles, small spangles, regular spangles, or big spangles. The main difference among them is the appearance, but a very slight difference in quality. So you can buy any type of galvanised steel sheet as you like. You can also contact us for samples.

Galvanized steel is extensively used in construction, furniture, home appliances, and automobile industry due to its versatility and durability.

Construction industry – Due to its light weight and durability, galvanized steel has been popular for over a century as building materials, especially for roofing and wall uses. Because of its aesthetics, it is suitable for different architectural styles. Besides, it is also widely used in fencing, grilles, gutters, rolling doors, pipes, etc.

Automobile industry – About 80% of the car body is made of galvanized steel because of its anti-corrosion. Also, it is also used to make shells, roofs, and floors of carriages, containers, etc.

Light industry, includes the casing of home appliances, chimneys, kitchenware, etc. It can be also found in agricultural uses or furniture industry, such as granary, billboard, etc.

Galvanized steel sheet refers to a steel sheet coated with a layer of zinc for aesthetics and anti-rust purpose. In terms of the manufacturing process, we divide it into hot-dip galvanized steel sheet and electro-galvanized steel sheet. Below are more details for your reference.

• Hot-dip Galvanized Steel Sheet

Hot-dip galvanized sheet is made by immersing the steel sheet into zinc solution at about 500 °C to attach a zinc layer to the surface. It is the most widely used and cost-effective method to process steel surfaces. Below is a workflow for your reference.

• Electro-galvanized Steel Sheet

Electro-galvanizing, also known as cold galvanizing, uses electrolysis to form a uniform and dense layer on the surface of the metal. But the zinc layer of the electro-galvanizing steel sheet is only 5-30 g/m². So its corrosion resistance is not as good as hot-dip galvanized sheets.

Difference Between Hot-Dip and Electro-galvanized Steel Sheets

• Anti-corrosion

Generally, the thickness of hot-dip zinc coating is more than 35 μm, or even as high as 200 μm. While the electro-galvanized zinc layer is only 5~15 μm in thick. So the former steel sheet is much more corrosion resistant than the latter one.

• Method of Operation

The hot-dip galvanized steel sheet is galvanized in a molten zinc bath at about 500 degrees, while the electro-galvanized steel sheet is processed at room temperature by electroplating or other methods. That’s why electro-galvanizing also refers to cold galvanizing process.

• Surface Smoothness & Adhesion

The surface of the electro-galvanized steel sheet looks smoother than hot-dip galvanized sheets. But its adhesion is not as good as that of the hot-dip galvanized sheet. If you want only one side galvanized, you can choose the electroplating method. While if adopting hot-dip galvanizing, both sides are coated with a zinc layer fully.