What is Galvanized Steel Sheet?

Galvanized Steel Sheet is used cold rolled steel coil as substrates by a continuous hot-dip process. This method tightly adheres the coating to the steel with an iron-zinc alloy bonding layer formed by a diffusion process while the heated steel strip is in contact with the molten zinc. One of the drawbacks of Galvanized is that if the Zinc coating is scratched off the steel, the Steel is left unprotected, and is subject to failure. It has excellent corrosion resistance, paintability, and workability due to zinc’s characteristics.

Galvanized Steel Sheet Types

1. Hot-dip Galvanized Steel Sheet (Z)
As the name implies, the steel sheet is immersed in the molten zinc bath continuously so that the coil is covered with a layer of zinc on its surface. Hot-dip galvanizing is immersing the cleaned iron sheet into the molten zinc bath at about 450 degrees to form a zinc layer. The zinc content should not be less than 99%. 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/m2.

But after continuous annealing and hot-dip galvanizing, the steel coil is heated and cooled in a short time so that its strength and plasticity are affected to a certain extent.

2. Zinc-Iron Alloy Galvanized Steel Sheet (ZF)
The hot-dip galvanizing process also manufactures this kind of steel coil. But it is heated to about 500 ℃ immediately to form an alloy coating of zinc and iron after it is out of the zinc bath. This galvanized coil has good coating adhesion and weldability. That is, it can be painted directly without further treatment, other than cleaning. The color is matt off-white, and it appears dark gray after oiling and it has no spangles. It is perfect for making rolling shutters, signboards, panels of vending machines, refrigerators, washing machines, display cabinets, office cabinets, etc.

3. Electro-galvanized Steel Sheet
Electro-galvanizing is a process of applying a layer of zinc to steel through electroplating, with a saline anode and steel conductor. It basically ensures the same performance of cold rolled sheets through cold galvanizing. Also, it is able to enhance the corrosion and heat resistance of steel. Its surface is smooth and uniform, and it has good workability. Also, it looks shiny and silver-white, which is more beautiful than a hot-dip one. Moreover, it is cheaper than hot-dip galvanized steel. However, the zinc coating is thinner, and the corrosion resistance is not as good as that of hot-dip galvanized coils.

Parameters

Send Us Your Requirements

Size: the thickness, width, zinc coating thickness, coil weight?
Material and Grade: Hot rolled steel or cold rolled steel? And with spangles or not?
Application: What is the purpose of the coil?
Quantity: How many tons do you need? The MOQ is 25 tons.
Delivery: When is it needed and where is your port?
If you have special requirements, please let us know.

Types of Zinc Coating

Galvanized Steel Sheet Coating Layer

Anti-Finger printing ,Chromated, Oiled/ non-oiled

Zn Plating Layer (20-120g/sm)

Cold Rolled Steel Sheet

Our product advantages

How to produce galvanized steel coils?

Uncoiler- Welder- Entry Looper- re-treatment- Annealing Furnace- Zinc Pot- Cooling Tower- Water Quench Tank- Skin Pass- Tension Leveler- Passivation Coater- Exit Looper- Recoiler

The production and processing of galvanized steel coils can be divided into three steps: first, the entire coil is pickled to remove rust and dirt, so that the surface of the galvanized steel strip can achieve a bright and clean effect; after pickling, pass ammonium chloride or zinc chloride It is cleaned in an aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride, and then sent to the hot-dip plating tank for the galvanizing process; after the galvanizing process is completed, it can be put into storage and packaged.

How do we arrange the package?

We use waterproof paper film for inner packing. Then the coils will be wrapped by steel belts and side guard plates to make sure the coils are well-protected during shipping. But if there is any problem after receiving your products, please contact us as soon as possible. And your company or logo information can also be printed above the package.

How to Transport Galvanized Steel Coils?

1. Choose a ventilated place for storage to avoid dew erosion or moisture penetration;

2. Confirm that the wrapping paper is not damaged during storage;

3. Shorten the storage time as much as possible and protect its surface;

4. Prevent dirt and oil powder from sticking to the surface, which will affect the galvanizing effect;

6. Place a skid or a support frame under the steel coil, and stack the coils into two layers;

7. Use rain cloth during transportation. Also, fix the coils with the skids, rubber pads, and ropes.

Cooperated Brand

Walk into Our Factory

From its humble beginnings in 1998, Zhongyi Steel Group has grown to be one of China’s most trusted names when it comes to steel manufacturing. We offer a full range of services that include project consultation and planning all the way through shipment or packaging up until after-sales service follow-ups – we’re always there for you.

Zhongyi Steel is committed to providing traders and importers with quality steel manufacturing solutions that they can trust. We provide a variety of steel products, such as PPGI coils and sheets, PPGL coils and sheets, coloured corrugated roofing sheets, etc Our products are designed to withstand any environment, and we make sure it’s easy for you. We only sell high-quality Galvanized Steel, so rest assured that your investment will be worth every penny!

Your business is too important not to get a great deal on the very best resources available – that’s why here at Zhongyi Steel, we provide customers with premium goods without concern about authenticity or legality because our goal has always been customer satisfaction since day one.

With a focus on quality and price, Zhongyi Steel Group has been able to dominate its industry. They have the latest technology with strict inspection processes for all galvanized steel products that are exported around the world.

Besides, you will never worry about the quality because we have a quality control system and full after-sales system, and all our products are tested and certificated. Also, we have a multilingual team to serve clients all over the world. Welcome to contact us for details!

Why We Can Be Your Business Partner?

We have 4 production lines, 15,000 Metric Tons per month producing capacity, and 2 days for MOQ delivery.

We have a perfect storage environment for transportation. The cargoes are transported by truck with rainproof canvas and putting desiccants in containers.

Besides:

1. Sample can be offered

2. We have 12 years of experience in designing, manufacturing, and selling steel coils. We cherish every order from our honour.

3. We have full stock and can deliver within a short time.Many styles for your choices.

4. OEM and ODM order are accepted; any kind of logo printing or design are available.

5.Reliable Quality + Factory Price + Quick Response + Reliable Service.

6. SGS / TUV inspection is acceptable to guarantee your order safety.

Certificates

How do we arrange the inspection?