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What are the Different Types of Galvanized Steel?

Types of Galvanized Steel

It is the process of coating iron or steel with liquid zinc to form a new material. Galvanized steel is the most popular type of steel for its durability, strength, hardness, and zinc corrosion protection. Zinc protects steel and iron by acting as a barrier to corrosive elements, and the ferrous nature of the coating results in a long-lasting and high-quality steel product.
This versatility makes it applicable to various projects and industries, including agriculture, solar, automotive, construction, etc. We will discuss types of Galvanized Steel in this article and the process of making it. There will be an ocean of information with attractive features and facts about galvanized steel. Continue to read it and share it among those seeking knowledge of steel.

Galvanization Process

Several processes are used to convert steel or iron into galvanized form. As we promised above, we will describe these processes to provide you with information about them. The most common process is the Hot-dip galvanizing process.
The story behind the innovation is very interesting. I hope you enjoy this information and feel relaxed. An Italian scientist, Luigi Galvani, was working on a project in 1780. He noticed electricity in the muscles of a frog’s legs. He joins the frog’s legs with two different metals, copper and iron and then saw an electric current is produced but noticed a faulty power source.
Do you know why he was thinking that this is the source of electricity?
If your answer is no, don’t break here. Read more to find the correct answer and its connection with galvanized steel.
He thinks that frog legs are a source of electricity. But it was not the reality. However, the name of Galvanized Steels is introduced from his name. Afterward, the process of research and experiments continued with different scientists. But it was in 1836 that a French Scientist Named Sorel dipped steel into zinc for the first time and called it galvanization. In a similar era, in 1837, a British Scientist;Sir Humphry Davy also did it, and the first use of it was for the British Navy.

How is this process done nowadays?

It is time to explore the process of making galvanized steel. It will be helpful for you, and you will enjoy it as above. So, do not skip it here.

  • Before dipping it, clean the steel in a degreasing solution.
  • After completing the cleansing process, steel is pickled by soaking it in a vat of hot dilute sulfuric acid.
  • When the pickle of steel is made and then immersed in an aqueous solution, usually zinc ammonium chloride.
  • After passing it from the aqueous, this melted steel becomes ready to vat in zinc for galvanization.
  • In the end, engineers test it for supply to the market.

This is the process of making galvanized steel from simple steel. I can say that this will be helpful for you. Now, it is time to explore its importance and types. You can imagine the twist and information you will learn in the following paragraphs.


As mentioned above, we started a discussion about galvanized steel. Anything made by humans has importance and benefits in humans’ lives. Same as Galvanized Steel is more important than all other types of steel. We will discuss them in this paragraph.

  • It is cheaper than other stainless steel because others need color, which increases their cost.
  • It has a longer life cycle than other steels. This thing also decreases the cost of galvanized steel than others.
  • The Australian and New Zealand standard 4680 is the best quality galvanized steel that is more reliable than others.
  • Galvanized steel is the best resistance against mechanical damage in transports, erection, and services.
  • Galvanized coatings preferentially pit the steel, providing cathodic protection to small portions of the steel exposed through damage.
  • It does not require extra protection for sides and edges. Coating provides complete protection to the steel.
  • You can easily check the zinc coat on the steel, which is a great way to find galvanized steel.
  • You can easily buy it and use it without any extra coating on site. It is the benefit that makes it unique from other steels.

That was the benefit of galvanized steel. Now, share your experience and impressions on it with us.
What do you think about Mr. Lugui Glavani’s innovation?
We can say that he just provided an idea and showed the side, but Mr. Sorel found this type of steel.
Let’s continue our journey and investigate its types.

Types of Galvanized Steel

We started our conversation with the wording of different types of galvanized steel. Then, discuss it from the perspective of innovation and study why it has become more important than general steel. Now we are coming back to the main question, and we will define its types and then continue to the uses and industry of Galvanized Steel.

1. Hot Dip Galvanized Steel (HDG)

Hot Dip Galvanized Steel (HDG)

What pops into your head when you see this name?
We can analyze from its name that it will be made with the Dipping of steel into any alloy. This is the right answer because it is made by dipping Steel into Zinc alloy.
Initially, the base metal has to be cleaned with chemicals manually. Both ensure a good quality bond that can be achieved between the zinc coating and the steel. The advantage of this particular method is that it is considered cost-effective and can be performed quickly, even for complex shapes. However, the final coating is not the same as the other galvanization processes; it is also part of galvanization.

2. Electrogalvanized Steel (EG or EGI)

Electrogalvanized Steel (EG or EGI)

The most unique of these described methods, electrogalvanizing, does not involve dipping the material into a molten vat of zinc. Instead, an electric current is introduced into an electrolyte solution that is applied to the steel, which reduces the positively charged zinc ions to zinc metal, then deposited on the positively charged steel. Like pre-galvanizing, this method is usually done at the first production stage.

3. Galvannealed Steel

Galvannealed Steel

When you see the name. What comes to your mind at first?
You think that it is the same as the original. If yes! You are near the correct answer but have yet to arrive at the final destination. It is an advanced form of galvanized steel. It is harder, more robust than galvanized steel, and not easily scratched.
Galvannealed Steel is highly electrically resistant and more easily welded than other steels. It is recommended for architectural needs because of its high resistance, harder core, and strongness. You can use it for doors, windows, and frame constructions.

4. Continuous Galvanizing (CGL)

Continuous Galvanizing (CGL)

The purpose of a continuous galvanization line is to provide corrosion resistance to steel with zinc alloy. There is a wide range of zinc coat thickness controls, and Galvanized Steel Sheets are used for various purposes. The main uses include building materials, automobiles, and electrical appliances. Steel Plantek’s CGL has unmatched functions that customers highly evaluate worldwide.

5. Sherardizing


Sherardizing means a uniform corrosion-resistant zinc coating on the steel or iron surface. The process originated in the 19th century and is named after its inventor, Sherard O. Interestingly, its material is the same as galvanized steel. However, due to differences in methodology, the name was changed.
The process is started by heating an object in a sealed container with zinc. But remember that temperature does not exceed limits suitable for zinc and does not melt it. Two metals, zinc and iron, joined with a zinc alloy. This alloy has an outer layer of pure zinc that resists corrosion and creates an excellent base for paint.

6. Batch (or Spin) Galvanizing

Batch (or Spin) Galvanizing

Batch hot-dip galvanizing, also known as common galvanizing. It is a process that involves completely dipping a steel product in a kettle of liquid zinc to produce a zinc coating. Before the steel is dipped in the zinc bath, it is chemically cleaned to remove oil, grease, dirt, mill scale, and oxides. This surface preparation is essential because impure steel will not react with zinc.
The unique intermetallic layers are strongly bonded and harder than the base steel, providing excellent abrasion resistance. Metallically bonded to the steel, the zinc-iron alloy layers become an integral part of the steel rather than merely a surface coating. Because zinc is more anodic than steel, even if the durable intermetallic layers of the hot-dip galvanized coating are damaged, the adjacent zinc will protect the exposed steel until the surrounding zinc is wholly consumed.

7. Pre-Galvanized Steel

Pre-Galvanized Steel

When the Steel Components are used to make a new product. Engineers galvanize them before converting them into any product. This process is called pre-galvanization, which is also called inline and mill. This automated process will vary depending on the type of component. Typically, steel components are dipped in a galvanizing bath of molten zinc. After removing the steel from the tub, excess zinc is removed using a mechanical wiper, air knife, or steam. This leaves a relatively thin layer of zinc coating that is galvanized.

Best Practices

When discussing different products of steel, the welding process was also a concern. Different products need cutting and welding in various formats. Each format required a unique way of cutting and welding and some special safety measures. We will study them here, and there is much more about them. So, if you skip here, you will lose valuable information.

Safety Concern

  • When you start welding, the zinc quickly evaporates in the air, making a gas that can cause health issues.
  • Galvanized Steels also have a lead coat that vaporizes in the air and creates a gas that becomes the case of long-term health issues.
  • Galvanized steel is a corrosion-resistant material, you need to remove the zinc layer before welding.
  • For better results, it is suggested to coat the newly invented product again after welding.

Safety Tips

  • Wear goggles to protect your eyes.
  • Wear proper dresses that are made for welders.
  • Always ensure an open place for welding purposes.
  • Use other welding equipment properly, such as shoes, gloves, and helmets.
  • If you are from high industrial areas. Wash your galvanized steel with fresh water daily.
  • Don’t store galvanized products in a wet place. Always ensure the storage place is dry and clean.

These were the issues and solutions that commonly come with Galvanized Steel Pipes. You can protect your galvanized products at home and protect yourself in designing units by following these instructions. We hope you will not face any boring in this complete article.
Let’s explore its architectural uses and others related to the architecture field.

Architectural Application

When we hear architecture, the first thing that comes to mind is construction. But it is not only this. Architecture means giving the physical shape to any idea. It can be a building, car, door, etc. Now, we will discuss different applications of galvanized steel in the architectural field.

  • It is used to build strong building structures. Galvan ensures that the frame and interior structure of a building remain strong for the decads of time.
  • When it comes to the strength and bolstering of the roads and bridges, there is no best option except galvanized steel.
  • Different industries also use it to increase the strength of their equipment. It is the best choice for American industries.
  • Galvanized Steel Coil is used to make sculptures because of its long-lasting duration and shiny colors.
  • It is used in solar panels to design their structures. It is used due to its corrosion resistance.
  • Zinc-coated bodies of different vehicles are common now. It was 1980 when it was used only in luxury vehicles.
  • The wonderful thing is that mobile phones now also use galvanized wires for a long lifetime.

These were only a few of the best approaches and common uses of galvanized steel. But there is no field now which does not use this metal. This is the best metal now that provides strength and works for a long time. You see it daily in your home and market. The few other reasons that make it the best choice are its shine, low cost, and low maintenance cost.

Industrial and Structural Uses

Galvanized Steel is used widely in different industries. It is good for outdoor products such as nuts and fasteners that are required to withstand exposure to water. Aerospace is an industry that heavily uses galvanized steel due to its durability. The construction industry is another field that uses it to increase the strength of their project frames.
Galvanizing the products ensures that the outer surface is protected from temperature, moisture, and environmental variations. In the above paragraph, we read about its use and commonly discuss its different benefits. A few other benefits are written below;

  • Zinc provides a protective barrier to steel against moisture, oxygen, and environmental conditions.
  • The life of galvanized steel is 50 years more than that of simple steel in standard areas and 20 years longer in special areas where water exposure can disturb it.
  • After dipping in zinc, it does not need more color or any repair.
  • Because of its long life and no repair needs, galvanized steel is a cost-effective solution for all types of steel needs.

These were the few uses and benefits of galvanized steel. We reached this point after all this discussion: galvanized steel is the best solution for each field. You can use it without any misconceived ideas in mind. It is the solution that saves money, provides strength to each element, and is able to be used in multiple fields.

Choosing the Right Type

Galvanized steel is a popular choice in the construction industry. It is famous for its durability and corrosion resistance. However, choosing the right type of galvanized steel is critical to the success of your project. But do not worry about this selection. We are here to support you. We will provide tips to help you select the best-galvanized steel for your project.


  • The first step is to define the basic perspectives of your project. Check environmental conditions, desired life span for galvanized steel, and load-bearing capacity. These things will help you to find the required thickness and type of galvanized steel.
  • Galvanized Steel comes in two coats. Hot-dip-coated galvanized steel is the best option for outdoor. Because it has a thick layer of zinc coat that provides the best resistance against moisture, water exploration, and rapid environmental changes.
  • Electro-galvanizing coated steels are the best option for indoor work because of their thin surface and less corrosive to the environment. So, if you are confused, select according to use and get help from an estimation firm to evaluate the required quality.
  • The thickness of gauges is an essential factor in galvanized steel selection. Thick steel is always used for load-barring construction and machinery. Thin steel is used in lightweight steel. So, focus on it when purchasing galvanized steel for any project.
  • Choose a reputable supplier because some suppliers use mixed materials. You can buy it from our this website where you are reading about it.
  • Suppose your project is located in a coastal area with high humidity or an industrial area with chemical exposure. You need to choose a thicker zinc coating that will provide extra protection against corrosion.

These were a few suggestions to keep in mind before selecting galvanized steel. There are many other factors that are considerable, but these were the main ones. You can contact our team to get information about our services and buy our products. We are available online, on-site, and on-call to assist our customers. Let’s continue our blog and see some maintenance tips that also will be helpful.

Maintenance Tips and Longevity

Galvanized Steel is one of the most commonly used steels. But everything required maintenance and care for a long working time. Same as it also needs to have some maintenance standards. If you follow them, you can increase their life by 20 to 5o years. We are writing some of the most important tips to maintain the quality and life span of galvanized Steel.

  • Do not use it where a continuous water explosion occurs. Because it damages the color and decreases life span.
  • Like other metals, galvanized steel needs to be cleaned regularly. But do not use any chemical or rough method to clean it. Use pure fresh water and dry it afterward.
  • Clean dust with the proper method. Do not put water from a long distance with pressure.
  • Do not put it with any dissimilar metal. It can be harmful for galvanized steel.

These were some maintenance tips. These can help galvanize your material from any issue and increase its life span. You must follow them for better results and to secure yourself from any unexpected situation. Now we are going to the end of our article. Share your past experiences, if you have any, with galvanized steel.

Where to Source Galvanized Steel

Quality Supplier – Four Steels

It’s time to close our discussion. We try to provide you with authentic information about galvanized steel.
But do you also think that there is a miscalculation?
This is about the trustworthy supplier. You may face an issue in selecting the best quality steel. But this issue can be resolved if you select a good reputed supplier.
We have a solution for this issue. Our company “Four Steels” can be your first and final choice because of its experience, reputation, and expert staff. You can contact us on info@foursteels.com and Buy Galvanized Steel. Feel free to contact us and ask queries. We believe in client satisfaction.
Our experts guide customers about different steels and suggest the best one but we never pressure our clients to buy our suggested product. We have a long time industry experience and provide the best steel products at reliable rates. Four Steels is the most trusted company that manufactures steel products using sustainable manufacturing practices. Hopefully, you are now clear about deciding to choose a reliable partner for your project.

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