Building B, Shenglong Erqi Center,
Xinghua South Street, Erqi District,
Zhengzhou, Henan Province, China

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Galvanized Steel Coil

Galvanized steel coil is one of the hot-selling products of Wanzhi Steel. It is available in big, regular, small, and zero spangles. Compared to color steel coil, it is more affordable. Also, it has excellent corrosion resistance and durability. That’s why it is extensively used in construction, automobile, furniture, home appliances, etc. Due to its wide applications and good machinability, it is also a great investment project. As a wholesale supplier, Wanzhi Steel has its own factory to meet bulk orders timely. Also, we will offer a direct-sale price to lower your cost. If you are interested, please contact us for details!

Galvanized Steel Coil

Galvanized Steel Coil

Shipping of Galvanized Coil

Shipping of Galvanized Coil

Galvanized Steel Coil Specification

Item Galvanized Steel Coil
Thickness 0.2 mm-4 mm
Width 600 mm-2,000 mm
Coil Weight 3-5 tons (can be customized)
Surface Structure Zero spangles, Small spangles, Regular spangles, Big spangles
Zinc Layer Thickness 30 g-275 g/㎡
Certificates SGS, BV, ISO 9001
Package Standard Export Package

Note: If you want the width less than 600 mm, you can choose steel strips.

GI Coils to Turkey

GI Coils to Turkey

Galvanized Coil Production

Galvanized Coil Production

Package of GI Coil

Steel coils are often packaged with waterproof kraft paper inside and steel sheet outside. Then it will be tied up with steel stripes. In order to fix it during transportation, we will use wood pallets. Below are some pictures for your reference.

Package of GI Coil

Package of GI Coil

Wanzhi Coil Packaging

Wanzhi Coil Packaging

 Applications of Galvanized Steel Coil

Galvanized steel coil can be widely used in different applications after further processing, including:

1. Construction

They are often used as roofing, interior and exterior wall panels, the surface sheet of the balcony, ceiling, partitioning walls, windows and doors, gutter, barn, sound insulation wall, etc.

2. Home Appliances

GI coil is widely applied to home appliances, such as the base of washing machines, water heaters, refrigerators, microwave ovens, etc.

3. Transportation

It is mainly used as decorative panels of cars, decks of trains or ships, containers, road signs, etc.

4. Furniture, such as wardrobe, locker, radiator, lampshade, table, bed, bookcase, shelf, etc.

5. Other Uses, such as post and telecommunication cable, highway guardrail, billboards, etc.

Galvanized Steel Roofing

Galvanized Steel Roofing

GI Steel Wall

GI Steel Wall

Why Choose Galvanized Steel Coil?

1. Cost-effective Solution

Compared to GL or color coated steel coils, the galvanized coil is the most cost-effective solution but with similar features, such as great corrosion resistance, good appearance, etc.

2. Wide Applications

GI sheet roll is easy to process for different purposes. It is widely used in construction, home appliances, automobile containers, transportation, etc.

3. Easy to Transport

Compared to GI steel sheets, coils are easier to transport. In this way, it will save your shipping cost.

Spangles on Galvanized Steel

Spangle is formed during the hot-dip galvanizing process. The size, brightness, and surface of spangles mainly depend on the composition of zinc layer and the cooling method. According to the size, it includes small spangles, regular spangles, big spangles, and free spangles. They look different, but the spangles almost will not influence the quality of galvanized steel. You can choose according to your preference and purpose.

Spangles of Galvanised Sheet

Spangles of Galvanised Sheet

Galvanized Steel Coil Types

According to the processing method, we divide galvanized steel into the following categories:

1. Hot-dip Galvanized Steel Coil

As the name implies, hot-dip galvanizing is immersing the cleaned iron sheet into the molten zinc bath at about 500 degrees to form a zinc layer. It is the most commonly used method. It has some advantageous features:

1) The entire steel surface is uniformly covered with a zinc layer, even the corners, hollows, etc. so that the steel sheet is fully protected.

2) The zinc coating of hot dip galvanized steel is thick and tough, which offers superior corrosion resistance. So it is more durable to use. At Wanzhi Steel, the maximum zinc layer thickness can reach up to 275 g/㎡.

2. Electro-galvanized Steel Coil

Electro-galvanizing is a process of applying a layer of zinc to steel through electroplating, with a saline anode and steel conductor. It is able to enhance the corrosion and heat resistance of steel. Its surface is smooth and uniform. Also, it looks shiny and silver-white, which is more beautiful than hot-dip one. Moreover, it is cheaper than hot-dip galvanized steel.

Hot-dip Galvanized Steel Coil

Hot-dip Galvanized Steel Coil

Galvanized Steel Coil at Factory

GI Coil at Factory

Differences Between Hot-dip and Electro Galvanized Coils

1. Thickness of Zinc Layer

Generally, the thickness of the electro-galvanizing layer is 5~15 μm, and the hot galvanizing layer is often more than 35 μm, or even as high as 300 μm.

2. Resistance to Corrosion 

The corrosion resistance of hot-dip galvanized coil is much better than that of an electro-galvanizing one. It is because of the thickness of the zinc layer and the adhesion between the base metal and zinc layer.

3. Appearance

The appearance of the electro-galvanized coil is more smooth and bright. While the surface of the hot-dip galvanized coil is rough and dull.

4. Applications

Hot-dip galvanizing products are widely used in transportation, building, communication, electric power, energy, automobile, petrochemical, home appliances, and other industries. While the electro-galvanized coil is more suitable for small parts, or indoor environments, etc.

Hot-dip Galvanized Coil Production Process

  • Clean the grease, dirt, and paint on the surface of the steel coil. The coils need to be uncoiled and welded for continuous processing.
  • Rinse off the cleaning solution.
  • Put into an acidic solution to remove mill scale.
  • Wash off the pickling solution.
  • Dip the steel into the molten zinc bath and hold for a while to be galvanized.
  • Cool down and roll up the steel into coils for sale.
Hot-dip Galvanizing Process

Hot-dip Galvanizing Process

Get Latest Galvanized Coil Price

The galvanized steel coil prices mainly depend on the thickness steel coil, the thickness of the zinc layer, etc. When you choose GI steel rolls for sale, you need to pay more attention to the quality instead of the price only. Wanzhi Steel has a galvanized steel production line, which can make 10,000 tons of steel coils monthly. So we can offer you a fair price. Also, we have rich export experience and multilingual teams to save your time and money. Because of the increasing price of material, GI sheet coil price keeps rising in recent months. Welcome to contact us for the latest price of galvanized coils. More than that, we also offer GI sheets for sale. If you are looking for corrugated or plain galvanized sheets for sale, please contact us now. We are looking forward to your visit.

Reliable Galvanized Steel Coil Manufacturer in China

Wanzhi Steel is one of the top galvanized steel coil suppliers in China. We have our own factory and advanced production line so that we can offer you quality coils at a fair price. Compared to famous galvanized steel coil manufacturers, like Bao Steel, Wuhan Iron & Steel, etc., Wanzhi Steel offers a more competitive price for the same quality products. Also, there are a variety of steel products to choose from. For example, we have GI coils with a thickness of 0.2 to 4 mm to select from. Also, we offer value-added services, such as profiling, shearing, etc. Welcome to contact us for details!

Galvanized Steel Factory

Wanzhi Steel is a production-oriented company, which has a factory in Shandong Province. There are two hot-dipped galvanizing lines, two color-coating lines and a galvalume production line in our factory. The annual output is more than 900,000 tons. Also, we have further processing equipment, such as rolling equipment to make corrugated roofing sheets. At WanzhI Steel, we also provide cutting, slitting, profiling services, etc. Besides, we employ advanced testing instruments to ensure that our products are made to meet the industry standard. Of course, third-party testing is acceptable. Welcome to contact us to plan your visit!

Wanzhi Factory

Wanzhi Factory

Galvanized Steel Coils

Production of Galvanized Coils


GI coil is a profitable investment project, which can be used in many areas. Wanzhi Steel is a qualified galvanized steel coil manufacturer in China, which has 17 years of industry experience and 12 years of export experience. During the two decades, we have developed full systems from pre-sales consulting to after-sales service. That’s why our products are well received by customers around the world. Except for GI coils and sheets for sale, we also have PPGI, PPGL, GL steel sheets and coils, tubes and pipes, etc. to choose from. Welcome to contact us for more information!

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