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Electro Galvanized Steel

Your Leading Gnee Steel (tianjin) Co., Ltd. Supplier

 

 

Amidst the vast land of China and the majestic Taihang Mountains lies Anyang, Henan Province, located on the eastern foothills of the Taihang mountain range. It is one of the eight ancient capitals of China and home to an outstanding steel supply chain enterprise – GNEE GROUP.

 

GNEE GROUP, established in 2008 with a registered capital of 5 million yuan, has grown into a comprehensive steel supply chain enterprise after more than a decade of hard work and perseverance. It has eight subsidiaries located in different countries and regions, including Anyang, Tianjin, Hong Kong, Zhengzhou, and Singapore, and its influence has reached out around the world.

 

As a subsidiary of GNEE GROUP, GNEE STEEL is situated adjacent to Anyang Iron and Steel, the north of HBIS, south of Wuyang steel, east of Shangang and Rizhao Iron and Steel, giving it access to abundant sources of goods. In 2023, GNEE STEEL completed the construction and commenced production at its factory in Qingxin with an investment of over 35 million yuan and a warehouse area of over 4,000 square meters. The facility is equipped to support various processes such as laser cutting, bending, welding, and painting. As of now, GNEE STEEL's total investment has reached over 60 million yuan, and the total floor area of the factory is nearly 40,000 square meters with more than 200 employees. Its main business includes the design and production of plate, steel pipe, profile steel, steel deep processing projects, garden design, weather-resistant material processing and production. GNEE STEEL has grown into a professional one-stop steel products supply chain enterprise.

 

 
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High quality
Our products are manufactured or executed to very high standards, using the finest materials and manufacturing processes.

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Rich experience
Our company has many years of production work experience. The concept of customer-oriented and win-win cooperation makes the company more mature and stronger.

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Our products support global shipping and the logistics system is complete, so our customers are all over the world.

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What is Electro Galvanized Steel?

 

 

Electrogalvanized steel is carbon steel with a corrosion-resistant zinc coating applied to one or both of its sides by electro-deposition. The continuous electrolytic coating process covers the steel surface with an exceptionally uniform thickness, which can enhance forming and joining operations.

 

Benefits of Electro Galvanized Steel

Electro galvanized steel offers several benefits that make it a preferred material for a variety of applications:

 

Corrosion resistance

The zinc coating provides a sacrificial layer that protects the underlying steel from rusting. This makes electro galvanized steel suitable for environments where exposure to moisture, humidity, or corrosive substances is present.

Longer service life

Due to its enhanced corrosion resistance, electro galvanized steel can last longer than uncoated steel. This extends the lifespan of structures and components made from this material.

Improved formability

The zinc coating does not significantly affect the formability of steel, allowing it to be bent, cut, and welded without compromising the integrity of the coating. This makes it easier to fabricate into complex shapes and structures.

Cost-effectiveness

Compared to other types of galvanization or coatings, electro galvanizing is generally less expensive. It provides a cost-effective way to add durability to steel products.

Aesthetic appeal

Electro galvanized steel has a smooth, shiny surface finish that can enhance the appearance of products. This makes it popular in consumer goods, automotive parts, and construction materials.

Easy to recycle

Steel is one of the most recycled materials in the world, and electro galvanized steel can be recycled without the need to remove the zinc coating, contributing to a more sustainable environment.

Compatibility with other treatments

Electro galvanized steel can be painted, coated with plastics, or powder coated, providing additional protection and customization options.

Consistency and uniformity

The zinc coating applied through electrogalvanization is consistent in thickness across the entire surface of the steel, ensuring uniform corrosion protection.

Fast production times

The electro galvanizing process is relatively fast, allowing for quick turnaround times in manufacturing and production.

 

Types of Electro Galvanized Steel

Electro galvanized steel is available in different varieties, each with specific characteristics suited to particular applications:

 

High tensile electro galvanized steel

This type of steel has been alloyed with additional elements to increase its strength and tensile capacity. Despite the increased strength, it retains good formability.

 

Zinc alloy coated steel

While not strictly electro galvanized, this category involves the use of zinc alloy coatings, which provide enhanced corrosion resistance compared to pure zinc coatings. Zinc alloy coatings may contain aluminum, silicon, or other metals.

 

Galvalume steel

Similar to zinc alloy coated steel, Galvalume steel features a coating that is an alloy of zinc and aluminum, offering superior resistance to atmospheric corrosion.

 

Galvannealed steel

After electro galvanizing, galvannealed steel undergoes a heat treatment process that transforms the surface of the zinc coating from matte to semi-bright or bright, providing better paint adhesion qualities.

 

Electro galvanized cold rolled steel

This is the standard form of electro galvanized steel, where cold rolled steel sheets are coated with zinc via an electroplating process. It combines the strength of cold rolled steel with the corrosion resistance of zinc plating.

 

Electro galvanized hot dipped sheet

This refers to hot dipped galvanized steel sheets that have undergone an additional electroplating process to improve the surface quality and adherence of the zinc coating.

 

Electro Galvanized Steel EGI

Application of Electro Galvanized Steel

 

Electro galvanized steel finds applications in a wide range of industries due to its corrosion resistance and formability. Here are some key areas where electro galvanized steel is commonly utilized:

1. Construction industry: Used for roofing, cladding, purlins, and framing in buildings. Its durability makes it ideal for structural applications exposed to the elements.

 

2. Automotive industry: In body panels, frames, and other parts where resistance to corrosion is essential while maintaining the ability to form intricate shapes.

 

3. Appliance manufacturing: Refrigerators, washing machines, and other appliances often use electro galvanized steel parts due to their resistance to scratches and dents.

 

4. Agricultural equipment: Due to its resilience to weather conditions, electro galvanized steel is used in the manufacture of tractors, plows, and other farm machinery.

 

5. Electrical enclosures: Because of its excellent corrosion resistance, electro galvanized steel is used to protect electrical equipment from the environment.

 

6. Shelving and storage systems: Its strength and durability make it suitable for use in shelving units, lockers, and other storage solutions.

 

7. Architectural mesh: Electro galvanized steel is used to create decorative and functional metal mesh for facades, dividers, and other architectural features.

 

8. Tools and hardware: Screws, nuts, washers, and other fasteners often utilize electro galvanized steel for its resistance to rust and wear.

 

9. White goods: Refrigerators, dishwashers, and ovens often incorporate electro galvanized steel in their construction for its durability and aesthetic appeal.

 

10. Signage: Outdoor signs and banners benefit from the corrosion resistance of electro galvanized steel to withstand the elements.

 

11. Telecommunications: Enclosures and infrastructure for telecommunication equipment are often constructed from electro galvanized steel to protect against corrosion.

 

12. Transportation: Truck bodies, trailers, and containers utilize electro galvanized steel to resist corrosion during transit.

 

13. Consumer products: Furniture, sporting goods, and other products that require metal components may use electro galvanized steel for its strength and longevity.

Electro Galvanised Steel Coil Sheet

 

Components of Electro Galvanized Steel
 
 

Electro-galvanized steel typically consists of the following components:

 

Steel base

This is the primary component and provides the strength and structural integrity. The type of steel used can vary, depending on the specific application and required properties.

 
 

Zinc coating

Zinc is electrodeposited onto the steel surface during the galvanizing process. The zinc coating acts as a protective barrier, preventing corrosion and rust.

 
 

Electrolyte

An electrolyte solution is used in the electroplating process. It contains ions of zinc and facilitates the deposition of the zinc coating on the steel.

 
 

Impurities

Depending on the quality of the electro-galvanizing process, there may be small amounts of impurities in the coating, such as iron, lead, or cadmium. However, these impurities are usually kept to a minimum to ensure the coating's effectiveness.

 

 

Process of Electro Galvanized Steel
 

The process of electro galvanizing steel involves several key steps to ensure that the steel is properly coated with zinc for corrosion protection:

Cleaning

The steel surface is thoroughly cleaned to remove any oil, dirt, mill scale, or rust. Cleaning is typically done using a degreasing agent followed by alkaline or acid pickling to remove scale and rust.

Rinsing

After cleaning, the steel is rinsed with water to remove any remaining chemicals and to prepare the surface for the electroplating process.

Pre-treatment

The steel may undergo a pre-treatment process such as phosphating or iron removal to enhance the adherence of the zinc layer and improve the overall quality of the coating.

Electroplating

The steel is then immersed in an electrolyte solution containing zinc ions. An electrical current is applied, causing zinc ions to deposit onto the steel surface, forming a metallic zinc coating. The voltage, current density, and time are controlled to manage the coating thickness and properties.

Post-treatment

After electroplating, the steel might undergo a passivation step in which an alkaline solution is used to remove any free iron from the surface and to improve corrosion resistance.

Drying

Finally, the electro galvanized steel is dried to remove any moisture from the surface, ensuring that the zinc coating is dry before it is used or further processed.

 

How to Maintain Electro Galvanized Steel

Maintaining electro galvanized steel involves several practices to ensure its longevity and effectiveness as a corrosion barrier. Here are some guidelines to follow:

Regular cleaning

Remove dirt, debris, and other pollutants regularly to prevent corrosive substances from accumulating on the surface. Use mild detergents and water; avoid abrasive cleaning materials that could scratch or damage the zinc coating.

Inspection

Conduct periodic inspections to identify any areas where the zinc coating may be deteriorating or where damage has occurred. Promptly repair any cuts, scratches, or other forms of damage to the zinc layer to prevent corrosion from penetrating the steel beneath.

Protective coatings

Consider applying additional protective coatings such as paints, primers, or powder coats to provide extra protection against the elements. These coatings should be compatible with the zinc surface and should be applied according to manufacturer instructions.

Avoid chemical exposure

Minimize exposure to chemicals, acids, and alkalis that can attack the zinc coating and lead to corrosion. If electro galvanized steel must be used in environments with such exposures, select a product with a thicker zinc coating or apply a more robust barrier coating.

Proper installation

When installing electro galvanized steel structures or components, ensure they are not in contact with dissimilar metals, as this can lead to galvanic corrosion. Use insulating materials where necessary to prevent direct metal-to-metal contact.

Lubrication

If electro galvanized steel is used in moving parts or hardware, apply appropriate lubricants to reduce friction and prevent corrosion. Make sure to use lubricants that are safe for use with zinc coatings.

Storage

When storing electro galvanized steel products, keep them dry and away from sources of contamination. Cover them if they will be exposed to the weather to prevent accumulation of moisture and debris.

 

Difference Between Electro-Galvanized Steel and Galvanized Steel

 

Electro-galvanized steel and galvanized steel are both types of steel that have been coated to prevent corrosion. Here are some of the differences between them:

Coating process: Electro-galvanized steel undergoes an electroplating process where zinc is deposited on the surface of the steel through an electric current. Galvanized steel, on the other hand, is coated with zinc through a hot-dip galvanizing process.

 

Coating thickness: Electro-galvanized steel typically has a thinner coating of zinc compared to galvanized steel. The coating thickness can vary depending on the specific application and requirements.

 

Corrosion resistance: While both electro-galvanized and galvanized steel offer corrosion protection, galvanized steel generally provides better corrosion resistance due to the thicker coating. It can withstand more severe environmental conditions.

 

Appearance: Electro-galvanized steel has a smoother and more uniform surface appearance. Galvanized steel may have a rougher texture due to the hot-dip process.

 

Cost: Generally, electro-galvanized steel is less expensive than galvanized steel because of the simpler coating process.

 

Application: Electro-galvanized steel is often used in applications where aesthetics and a smooth surface are important, such as in the automotive and electronics industries. Galvanized steel is commonly used in construction, infrastructure, and heavy-duty applications where corrosion resistance is critical.

The choice between electro-galvanized steel and galvanized steel depends on the specific needs of the project, such as the level of corrosion protection required, cost considerations, and visual appearance. It's essential to select the appropriate type of coated steel based on the intended use and environment.

 

How to Tell the Difference Between Hot-Dipped Galvanized and Galvanized?

 

 

Distinguishing between hot-dipped galvanized and electro galvanized steel involves examining the physical properties of the zinc coating and sometimes requires close inspection or specialized testing. Here are some characteristics that can help differentiate between the two:

Coating thickness: Hot-dipped galvanized steel generally has a thicker zinc coating compared to electro galvanized steel. A simple way to check is to compare the product against known standards or use a coating thickness gauge to measure the zinc layer.

 

Coating appearance: The surface finish of hot-dipped galvanized steel tends to have a spangled or crystalline appearance due to the rapid cooling of the molten zinc. Electro galvanized steel, on the other hand, often has a smoother, brighter, and more uniform appearance since the zinc is electroplated and doesn't undergo the same cooling process.

 

Coating adhesion: The adhesion of the zinc coating to the steel substrate is generally stronger in hot-dipped galvanizing due to the metallurgical bond formed during the hot-dip process. In electro galvanizing, the zinc layer is primarily mechanical and chemical in nature, which can result in a coating that is somewhat less robust.

 

 Corrosion resistance: Hot-dipped galvanized steel provides better corrosion resistance due to the thicker zinc coating and the presence of alloyed elements that form on the steel when it is dipped into molten zinc. Electro galvanized steel offers good corrosion resistance but may not last as long in highly corrosive environments.

 

Weight: Because of the thicker coating, hot-dipped galvanized steel will generally weigh more than electro galvanized steel of the same size and shape.

 

Passivation layer: Sometimes, after hot-dip galvanizing, there is an iron zincide layer that forms between the steel and zinc coating. This layer helps prevent corrosion under insulation (CUI). Electro galvanized steel does not develop this layer because it is not exposed to the same temperatures during the plating process.

 

Destructive testing: In cases where visual inspection and non-destructive methods fail to provide conclusive evidence, destructive testing can be performed. By cutting into the coating and examining the cross-section under a microscope, one can observe the differences in coating structure and adherence.

 

How Thick is the Typical Galvanized Coating?
 

The thickness of the galvanized coating on steel depends on the application and the required level of corrosion protection. Here are some common thickness ranges for galvanized coatings:

Light coating

This is the thinnest type of galvanized coating, typically used for applications where aesthetics are important but not much corrosion protection is required. The coating thickness is usually between 2 and 6 micrometers.

Medium coating

This type of galvanized coating offers moderate corrosion protection and is commonly used in applications such as sheet metal, piping, and fasteners. The coating thickness is usually between 6 and 15 micrometers.

Heavy coating

This is the thickest type of galvanized coating and provides the highest level of corrosion protection. It is commonly used in applications such as outdoor structures, marine environments, and industrial settings. The coating thickness is usually between 15 and 30 micrometers.

 

It's important to note that the thickness of the galvanized coating can also be specified by the customer or by industry standards. In some cases, a thicker coating may be required to meet specific performance requirements or to comply with regulations.

 

What Are the Environmental Considerations of Using Electro Galvanized Steel?
 

Electrogalvanized steel is a material that has been coated with a thin layer of zinc to protect it from corrosion. The process involves cleaning the steel surface, then immersing it in a molten zinc bath at a temperature around 450 degrees Celsius. The zinc coating that results is relatively thin, typically around 5-10 micrometers.

The environmental considerations associated with electrogalvanized steel include:

Energy consumption

The heating of zinc to its melting point requires significant energy, which can lead to higher greenhouse gas emissions if the energy source is fossil fuels.

Waste generation

The galvanizing process can generate waste materials, such as fluxes and residues from the cleaning and pre-treatment steps. These wastes must be managed properly to prevent environmental contamination.

Zinc disposal

Zinc and its compounds are listed as hazardous wastes under various regulations. Therefore, the disposal of spent galvanizing solutions or contaminated materials must comply with environmental protection laws.

Recyclability

Steel is one of the most recycled materials in the world, and electrogalvanized steel can be recycled along with other steel products. However, the presence of zinc may affect the recycling process, making it more complex and less efficient.

Corrosion control

The primary reason for galvanization is corrosion prevention, which extends the life of steel structures and reduces the need for replacement, thereby conserving resources and minimizing waste.

Alternatives

In some cases, alternatives to electrogalvanized steel may offer better environmental performance. For example, hot-dip galvanized steel has a thicker zinc coating and potentially longer corrosion protection, reducing the need for frequent replacement.

 

How Do You Repair Damage to an Electro Galvanized Steel Coating?

Repairing damage to an electro galvanized steel coating typically involves the following steps:

Clean the area

Begin by cleaning the damaged area with water and mild soap to remove dirt and oils. Afterward, use a wire brush or sandpaper to remove any rust or scale from the exposed steel.

Prepare the surface

It's crucial to prepare the steel surface so that the new zinc will adhere well. This may involve further abrasion with a wire brush to create a rough surface or using a chemical etching solution designed for metal surfaces.

Apply zinc primer

A zinc-rich primer can be applied to the cleaned and prepared area. This serves as a sacrificial layer that protects the underlying steel. Ensure complete coverage without gaps.

Add top coats

Once the zinc primer is dry, apply one or more top coats of paint or coating. Choose a high-quality paint that is compatible with the zinc primer and suitable for the environment and service conditions of the steel.

Allow drying

Allow each layer to fully dry before applying the next. This ensures maximum adhesion and protection.

Inspection

After the final coat is dry, inspect the repair area to ensure there are no missed spots or areas where the coating is too thin.

Touch-ups

If necessary, perform touch-ups on the repaired area to address any deficiencies.

 

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Amidst the vast land of China and the majestic Taihang Mountains lies Anyang, Henan Province, located on the eastern foothills of the Taihang mountain range. It is one of the eight ancient capitals of China and home to an outstanding steel supply chain enterprise – GNEE GROUP.

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FAQ

 

Q: Is electro galvanized the same as galvanized?

A: To break it down, hot dipped galvanized offers thick protection from the elements. Its finish is dull yet durable, especially for large items. Electro galvanized offers a thin layer of protection that's smooth, shiny. It is a good option for smaller, more intricate items, although it is less durable than hot dipped.

Q: Will electro galvanized steel rust?

A: It can, and may if it remains exposed to intense elements in difficult environments for decades. But often, the other materials used in the project need to be repaired well before the galvanized steel materials show signs of rust.

Q: What is electro galvanised steel?

A: Electrogalvanized steel is a type of steel where a layer of zinc is bonded to steel in order to protect against corrosion. The process involves electroplating, running a current of electricity through a saline/zinc solution with a zinc anode and steel conductor.

Q: How long will electro galvanized steel last?

A: Electro-galvanized coatings are thinner and more uniform than hot-dip galvanized coatings, and they are typically used in less severe environments. These coatings can last up to 20 years in rural environments and up to 10 years in more corrosive environments.

Q: Is electro galvanized better than hot dipped bolts?

A: Electro-galvanization has very low life, ranging from several months to some years only. But, hot dip galvanization is known to have very high life averaging between 20 to 50 years. Electro-galvanization comes with excellent finish. However, hot dip galvanization has dull, unpleasant finish.

Q: How thick is electro galvanized?

A: Between 6 to 10 microns
The characteristics of an electro-galvanized coating are summarized as follows. Uniform smooth coating with a bright luster. Coating thickness usually between 6 to 10 microns (µm). The coating consists of +99% zinc.

Q: How thick is electro galvanized steel?

A: We provide a wide lineup of sheet thicknesses from 50 μm to 1.2 mm with functionality such as beautiful surface finishes, scratch-resistance, workability, paintability, solderability and conductivity. Surface-treated steel sheet is used for many different purposes.

Q: Is electro galvanized the same as Stainless steel?

A: Galvanized steel offers excellent resistance against water and chlorine but pales in comparison to stainless steel's corrosion resistance when dealing with marine environments. The protective layer on galvanized is also not self-healing like the passive layer on stainless steel.

Q: Is zinc and electro galvanized the same?

A: Zinc plating (also known as electro-galvanising) is a process where zinc is applied by using a current of electricity. While is does provide some rust protection, its thinner coating is not as rust resistant as hot dip galvanising. Its main advantage is it is cheaper and easier to weld.

Q: Can you weld electro galvanized steel?

A: Welding galvanized steel is possible, but it should only be done if absolutely necessary. If you can weld the materials before they are galvanized, you will avoid the health risks associated with welding fumes and lead exposure. You will also avoid potential weak spots in your project caused by welding.

Q: How to tell the difference between hot-dipped galvanized and galvanized?

A: Hot-dipped galvanization involves submerging the steel in molten zinc, whereas galvanized steel is coated with a protective layer of zinc through electroplating. The main difference is in how they are applied; hot-dipped coating offers a stronger, thicker layer that works especially well in abrasive situations.

Q: What is the difference between electroplating and electro galvanizing?

A: KEY DIFFERENCES BETWEEN HOT DIP GALVANIZING & ELECTROPLATING
Hot dip galvanizing involves dipping the object in molten zinc to create a thick coating that provides corrosion resistance, whereas electroplating involves depositing a thin layer of metal onto the object using an electrolytic solution.

Q: How do you electro galvanized steel?

A: Electrogalvanizing is a process in which a layer of zinc is bonded to steel in order to protect against corrosion. The process involves electroplating, running a current of electricity through a saline/zinc solution with a zinc anode and steel conductor.

Q: How strong is 17 gauge galvanized steel?

A: This economical galvanized steel wire comes in several sizes to fit your standard electric fencing needs. The Zareba® Galvanized Steel Wire coil has 100 ft of 17 gauge wire. It has a breaking load of 125-145-pound and a tensile strength of 90,000-105,000 psi.

Q: What is the yield strength of electro galvanized steel?

A: The typical yield strength is between 470 to 550 MPa. The typical tensile strength is between 510 to 600 MPa. This steel is normally roll formed into products such as purlins, girts and light structural profiles.

Q: Is electro galvanized steel magnetic?

A: Yes, galvanized steel is magnetic. Is galvanized steel magnetic? Steel is a magnetic metal; therefore, galvanization does not make it lose magnetic properties. Although zinc is not magnetic, steel maintains its magnetic properties even after coating the steel.

Q: What does salt water do to galvanized steel?

A: Cast iron and galvanized steel are resistant to saltwater but over time due to exposure will succumb to corrosion. Plastic is the most resistant to salt water corrosion. However there are preventative solutions to make sure salt in water does not corrode pipes.

Q: Which is more rust resistant zinc or galvanized?

A: Zinc plating (also known as electro-galvanising) is a process where zinc is applied by using a current of electricity. While is does provide some rust protection, its thinner coating is not as rust resistant as hot dip galvanising. Its main advantage is it is cheaper and easier to weld.

Q: How long will electro-galvanized steel last?

A: Electro-galvanized coatings are thinner and more uniform than hot-dip galvanized coatings, and they are typically used in less severe environments. These coatings can last up to 20 years in rural environments and up to 10 years in more corrosive environments.

Q: How do you etch galvanized metal with vinegar?

A: First, if it's oxidized like this, use your wire brush just to knock a little bit of that oxidation off, and then wipe it down. And then this is the key thing, use white vinegar. Wipe it down very thoroughly with the white vinegar. It's an acid, and it'll etch it so the paint will stick.

We're professional electro galvanized steel manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy cheap electro galvanized steel for sale here and get free sample from our factory. For price consultation, contact us.

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