Hot Dipped Galvanized Coil
Introduction
Hot-dip galvanized coil is a kind of anti-corrosion steel product with a zinc layer on the surface of the steel. It is a basic material widely used in construction, automobiles, home appliances, agriculture, and other industries.
Feature
Strong anti-corrosion ability
Hot-dip galvanized coil effectively blocks moisture and oxygen by forming a zinc-iron alloy protective layer and can maintain long-term protection in harsh environments such as humidity, heat, and salt spray, and the anti-corrosion life can reach decades.
High structural strength
The base material is made of low-carbon cold-rolled steel. After annealing and temperature-controlled galvanizing, the yield strength is controlled at 230-450MPa, and the tensile strength can reach 340-550MPa, so that the product has both high strength and good ductility, which is suitable for load-bearing structures or high-strength components.
High forming efficiency
The zinc layer on the surface of the product is lubricating, which reduces the friction and wear of the mold during the forming process. Combined with the finishing treatment, the plate shape is flat, which effectively improves the forming efficiency and product qualification rate of rolling, bending, stamping, and other processes.
Product Details
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Product Name |
Galvanized Steel coil / hot dipped galvanized coil |
|
Spangle |
Small/ Regular/ Big/ Zero(no) |
|
Technical Standard |
EN10147/EN10142/DIN/17162/JIS G3302/ASTM A653 |
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Grade |
Dx51D, Dx52D, Dx53D, DX54D, S220GD, S250GD, S280GD, S350GD, S350GD, S550GD; SGCC, SGHC, SGCH, SGH340, SGH400, SGH440, SGH490, SGH540, SGCD1, SGCD2, SGCD3, SGC340, SGC340, SGC490, SGC570; SQ CR22 (230), SQ CR22 (255), SQ CR40 (275), SQ CR50 (340), SQ CR80 (550), CQ, FS, DDS, EDDS, SQ CR33 (230), SQ CR37 (255), SQCR40 (275), SQ CR50 (340), SQ CR80 (550); or Customer's Requirement |
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Type |
Coil/Sheet/Plate/Strip |
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Thickness |
0.12-6.00mm, or the customer's requirement |
|
Width |
600mm-1500mm, according to the customer's requirement |
|
Type of Coating |
Hot Dipped Galvanized Steel(HDGI)/Electro Galvanized Steel(EGI) |
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Zinc Coating |
20-275g/m2 |
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Surface Treatment |
Passivation(C), Oiling(O), Lacquer sealing(L), Phosphating(P), Untreated(U) |
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Surface Structure |
Normal spangle coating(NS), minimized spangle coating(MS), spangle-free(FS) |
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Quality |
High quality |
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Application |
It is mainly used in construction, light industry, automobile, agriculture, animal husbandry, fishery, and commercial industries. |
|
Export Packing |
Waterproof Paper, Steel Strip Packed, and other Standard Export Seaworthy Package, or customized package |
Available surface treatments
Passivation Treatment
Passivation treatment forms a dense passive film on the surface of the galvanized layer. This film reduces direct contact between the zinc layer and oxygen or moisture in the atmosphere, effectively slowing down the corrosion process.
Oiling Treatment
Oiling treatment applies a thin layer of anti-rust or lubricating oil on the galvanized surface to protect against corrosion and scratches during storage and transportation. Anti-rust oil isolates air and moisture to prevent corrosion, while lubricating oil reduces friction and improves processing performance. Oiling is often combined with passivation to enhance corrosion resistance and workability.
Paint Sealing Treatment
Paint sealing applies a coating layer over the galvanized surface to create a solid barrier that prevents corrosion. This treatment isolates the steel from air, moisture, and corrosive substances, extending the product's service life. It is commonly used when aesthetic appearance or protection in severe environments is required.
Phosphating
Phosphating improves the bonding strength between steel and coatings and enhances corrosion resistance. However, it is generally unnecessary for hot-dip galvanized steel coils because their zinc layer already provides strong corrosion protection.
Untreated State
Untreated hot-dip galvanized coils have no additional surface treatment after galvanizing. Their corrosion resistance depends mainly on the zinc layer's thickness and composition. These coils are typically used where corrosion resistance is not critical or as raw materials for further processing.
About Us
Our products have passed the ISO9001 internationally well-known certification bodies.
Our Factory
Our factory offers direct sales with competitive pricing and maintains a huge stock to ensure fast delivery. We support both OEM and ODM services, backed by ISO9001 certification for quality assurance. Additionally, our 24-hour real-person online service guarantees timely and professional support for all your needs.
Packaging & Delivery
1. Plain packaging
2. According to customer requirements
FAQ
Q: Can you provide OEM/ODM service?
Q: What are your Payment Terms?
Q: Can you provide a sample?
Q: What's the MOQ?
Q: How to control the quality?
Q: What is Hot Dipped Galvanized Coil?
A: The Hot Dipped Galvanized Coil is a steel coil that has been treated by hot-dip galvanizing. It forms a dense zinc-iron alloy protective layer by immersing the steel strip in molten zinc liquid, which has excellent anti-corrosion performance.
Q: What processing technologies are suitable for hot-dip galvanized coils?
A: It is suitable for a variety of processing technologies such as shearing, bending, stamping, welding, etc. The zinc layer is firmly attached and not easy to fall off, ensuring stable performance after processing.
Q: How to ensure the stable quality of hot-dip galvanized coils?
A: Through the automated production line equipped with a laser thickness gauge and online zinc layer detection, the thickness tolerance and zinc layer uniformity are strictly controlled to ensure consistent performance of batch products.
Q: What are the surface treatment methods for hot-dip galvanized coils?
A: Common ones include passivation, oiling, sealing, and phosphating treatment, and the untreated state can also be selected to meet different transportation and use requirements.
Q: How to store and transport hot-dip galvanized coils to prevent rust?
A: It should be kept dry and ventilated to avoid moisture accumulation; use anti-rust oil or coating for protection, and use waterproof packaging during transportation to reduce surface scratches.
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