What Is Galvanized Steel Coils ? All About Galvanized Steel Coils

What Is Galvanized Steel Coils ? (GI Steel Coils)

Galvanized steel coils are sheets of steel that have been coated with a protective layer of zinc through a process called galvanization.

This process involves immersing the steel coils in a bath of molten zinc, which forms a metallurgical bond with the steel substrate.

The zinc coating serves as a barrier against corrosion, protecting the underlying steel from rust and other forms of deterioration caused by exposure to moisture, oxygen, and other environmental factors.

Galvanized steel coils are commonly used in various industries and applications where corrosion resistance is essential, such as in construction, automotive manufacturing, appliances, and agricultural equipment.

They are often formed into various shapes and sizes to create components and structures that require durability and longevity.

Additionally, steel coil galvanized can be further processed through techniques such as cold rolling, annealing, and coating to achieve specific mechanical properties and surface finishes tailored to different end uses.

In summary:

Galvanized steel coil or GI steel sheet in coils or Zinc Coated Steel Coils is the same name of a type of coated steel coils, refer to the same one product. Which is produced from rerolled Hot Rolled Coils (HRC) to cold rolled coils (CRC), and then cold rolled steel sheet coated with zinc coating layer – by hot dip galvanization method. It is also known as galvanized steel coils or GI coils.

Which Standard and Grade Applied for Galvanized Steel Coils ?

Hot-dip Galvanized steel sheet in coils are widely used in modern society, such as automobile parts, computer case, architecture material, household appliance and so on. To meet the multiple requirements, the specification of hot-dip Galvanized steel coils became more and more diversified according to requirement of each importing country.

Brief introductions of galvanized steel product (Zinc coated steel coils) products are as below:

JIS G3302 SGCC/SGCD1/2/3/4, JFS A3011 JAC270C/D/E/F

JIS/JFS standard of hot-dip galvanized products, grade from commercial quality to deep drawing quality, which can be used in various applications, mainly focus on their deforming properties.

JIS G3302 SGC340~570, JFS A3011 JAC340~440W

JIS/JFS standard of high strength hot-dip galvanized steel, tensile strength (TS) from 340 to 570 N/mm2 which are widely used in automobile structures or other high strength-required parts.

ASTM A653 CS/FS/DDS/EDDS

ASTM standard of hot-dip galvanized products, grade from commercial quality to deep drawing quality,
which can be used in various applications, mainly focus on their deforming properties.

EN 10346 DX51/52/53/54/56/57D

EN standard of hot-dip galvanized products, grade from commercial quality to deep drawing quality,
which can be widely used in various applications, mainly focus on their deforming properties.

EN 10346 HX260YD, HX300YD, JAC340~390P

EN standard of hot-dip galvanized steel coils possessing high strength, excellent press-formability, which
are widely used in automobile structure parts

EN 10346 HX380LAD, HX420LAD, JAC440~590R

EN standard of hot-dip galvanized micro alloyed steel coils with high strength and low carbon equivalent
(to promote weld-ability), excellent formability, which are widely used in automobile structural reinforce
members to reduce vehicle weight.

AS 1397 G350, G450, G500, G550

AS 1397 of continuous hot-dip metallic coated steel sheet and strip-coatings of zinc and zinc with
aluminum and magnesium, excellent formability, mainly focus on their deforming properties.

See more:

• Top galvanized steel coil suppliers in Vietnam

Application Of Galvanized Steel Coils ?

Galvanized steel coils find application in various industries and settings due to their corrosion-resistant properties. Here are some common applications:

1. Construction: Galvanized steel coils are extensively used in construction for roofing, siding, gutters, and downspouts. The corrosion resistance makes them ideal for outdoor structures exposed to the elements.
2. Automotive: Automotive manufacturers use galvanized steel coils for body panels, chassis components, and underbody structures to enhance corrosion protection and prolong the lifespan of vehicles.
3. Appliances: Galvanized sheet metal coils are utilized in the production of household appliances such as refrigerators, washing machines, dryers, and dishwashers due to their resistance to moisture and rust.
4. Agricultural Equipment: Farm machinery and equipment, including grain bins, fencing, and irrigation systems, often incorporate galvanized steel coils for durability and longevity in agricultural environments.
5. HVAC Systems: Heating, ventilation, and air conditioning (HVAC) systems utilize GI coil for ductwork and ventilation components due to their resistance to corrosion and ability to withstand varying temperatures and humidity levels.
6. Electrical Enclosures: Galvanized steel coils are employed in electrical enclosures and cabinets to protect wiring and electrical components from moisture, humidity, and environmental factors.
7. Industrial Equipment: Various industrial applications, including manufacturing equipment, storage tanks, and infrastructure, utilize galvanized steel coils for their resistance to corrosion and mechanical strength.
8. Transportation: Galvanized steel coils are used in transportation infrastructure, including bridges, highway guardrails, and railway tracks, to withstand exposure to harsh weather conditions and corrosive elements.
9. Consumer Goods: Galvanized steel coils are found in a range of consumer goods such as furniture, storage containers, and playground equipment, where corrosion resistance is important for product longevity.
10. Greenhouses: Galvanised steel coil are used in the construction of greenhouse structures and components due to their ability to resist rust and withstand exposure to moisture and chemicals used in agricultural settings.

Where To Buy Galvanized Steel Coils ?

The belows are some of the top exporting countries of hot dipped galvanised coil:

1. China: China is one of the largest exporters of galvanized steel coils, supplying a significant portion of the global market demand. Chinese steel manufacturers export galvanized coils to various countries around the world.
2. South Korea: South Korea is another major exporter of galvanized steel coils. The country’s steel industry is highly developed, with several leading steel manufacturers exporting galvanized products internationally.
3. Japan: Japan is known for its high-quality steel products, including galvanized steel coils. Japanese steel companies export galvanized coils to numerous countries, particularly in Asia and other regions.
4. Germany: Germany is one of the leading steel producers in Europe and exports galvanized steel coils to markets worldwide. German steel manufacturers are known for their advanced technology and high-quality products.
5. Vietnam:Vietnam has emerged as a significant player in the global steel market, including the production and export of galvanized steel coils. While not traditionally considered one of the top exporters, Vietnam’s steel industry has been experiencing rapid growth in recent years. The country benefits from competitive labor costs, a growing manufacturing sector, and favorable trade agreements. Vietnam’s steel manufacturers have been increasing their capacity and investing in advanced technology to produce high-quality galvanized steel coils. Additionally, Vietnam’s strategic location in Southeast Asia provides easy access to regional and international markets.
6. India: India has a significant steel industry and exports galvanized steel coils to various countries, including neighboring nations in Asia and regions such as the Middle East, Africa, and Europe.
7. United States: The United States is a major exporter of galvanized steel coils, supplying markets in North America, Latin America, and other regions. American steel producers export galvanized products for various applications.
8. Russia: Russia is a significant player in the global steel market and exports galvanized steel coils to countries in Europe, Asia, and the Middle East. Russian steel companies contribute to international trade in galvanized products.
9. Turkey: Turkey has a well-established steel industry and exports galvanized steel coils to markets in Europe, the Middle East, and North Africa. Turkish steel manufacturers are key suppliers in the global market.

Top Leading Manufacturers Of Galvanized Steel Coils ?

Leading Galvanized Steel Coils Manufacturers In China:

China is one of the world’s largest producers and exporters of galvanized steel coils, with numerous manufacturers operating in the country. Some of the leading galvanized steel coil manufacturers in China include:

1. Baosteel Group Corporation: Baosteel is one of China’s largest steel producers and a key player in the global steel industry. The company manufactures a wide range of steel products, including galvanized steel coils, catering to various industries such as construction, automotive, and appliances.
2. Shougang Group: Shougang Group is another major steel company in China, known for its production of high-quality galvanized steel coils and other steel products. The company’s advanced manufacturing facilities and strong research and development capabilities contribute to its leadership in the steel sector.
3. Wuhan Iron and Steel Group Corporation (WISCO): WISCO is a leading steel manufacturer in China, producing galvanized steel coils and other steel products for domestic and international markets. The company’s modern production facilities and emphasis on innovation ensure the production of high-performance steel products.
4. Ansteel Group Corporation: Ansteel Group is among China’s top steel producers, with a diversified product portfolio that includes galvanized steel coils for various applications. The company’s focus on technological innovation and sustainable development has enabled it to maintain its competitiveness in the global steel market.
5. Shandong Iron and Steel Group Co., Ltd. (Shandong Steel): Shandong Steel is a prominent steel manufacturer in China, producing galvanized steel coils and other steel products for construction, automotive, and manufacturing sectors. The company’s extensive production capacity and distribution network contribute to its strong presence in the domestic and international markets.
6. Benxi Iron and Steel Group Co., Ltd. (Benxi Steel): Benxi Steel is one of China’s major steel producers, known for its production of galvanized steel coils and other steel products. The company’s state-of-the-art production facilities and commitment to quality ensure the delivery of reliable and durable steel products to customers worldwide.
7. Hebei Iron and Steel Group Co., Ltd. (HBIS Group): HBIS Group is one of China’s largest steel producers, offering a wide range of steel products, including galvanized steel coils, to domestic and international markets. The company’s comprehensive production capabilities and strong research and development efforts make it a leading player in the global steel industry.

Leading Galvanized Steel Coils Manufacturers In Vietnam

Some of the leading galvanized steel coils (Zince coated steel coils) manufacturers in Vietnam include:

1. Hoa Sen Group: Hoa Sen Group is one of the largest steel manufacturers in Vietnam, producing a wide range of steel products, including galvanized steel coils. The company has modern production facilities and a strong distribution network, supplying both domestic and international markets.
2. Nam Kim Steel: Nam Kim Steel is another major player in the Vietnamese steel industry, specializing in the production of galvanized steel coils, pre-painted galvanized steel coils, and other steel products. The company exports its products to various countries worldwide.
3. Ton Dong A Corporation: Ton Dong A Corporation is a leading steel manufacturer in Vietnam, producing galvanized steel coils, cold-rolled steel coils, and other steel products. The company serves diverse industries such as construction, automotive, and household appliances.
4. Hoa Phat Steel Sheet, a subsidiary of Hoa Phat Group, was established in 2007 with the aim of becoming a leading manufacturer of steel sheets and coils in Vietnam. The company’s headquarters and production facilities are located in Hai Duong Province, Vietnam.
5. Ton Phuong Nam – Southern Steel (SSSC): Ton Phuong Nam is a reputable manufacturer of galvanized steel coils and other steel products in Vietnam. The company emphasizes product quality and customer satisfaction, catering to various industries such as construction, agriculture, and manufacturing.

These are some of the leading galvanized steel coils manufacturers in Vietnam, contributing to the country’s growing presence in the global steel market.

It’s important to note that the landscape of the steel industry can evolve, and new players may emerge over time. Additionally, there are alot confuse information about steel manufacturer and suppliers when finding a trusted galvanized steel supplier.

About Us – GTS Steel:

As a Steel Supplier/ Steel Sourcing/ Business Consult company, our mission is to connect you with suitable leading steel manufacturers in Vietnam and China, to support you to get the best quotation from reliable steel manufacturers.

For over 10 years in steel field, we have set up deep connections with steel manufacturers/ steel mills in Vietnam and China. We are confident to bring the best price and service to our customers with various types of steel:

– Hot Rolled Coils steel – HRC
– Cold Rolled Coils – CRC
– Coated Steel (Galvanized steel/ Galvalume steel coils, Prepainted Steel Coils – GI, GL, PPGI, PPGL)
– Wire rods, Beams
– Stainless steel
– Steel pipes…

We believe that our sourcing services will help you to find the right manufacturers with qualified quality steel products and best competitive prices.

If you are looking for steel coils products from leading steel manufacturers in Vietnam and China, please feel free contact us at:

GTS Steel Pacific Ltd

(represent for leading steel manufacturers in Vietnam and China)