Hot-dip Galvanized Steel
Hot-Dip Galvanized Steel Products (Metallic Coated Steel Products) are a high-quality, durable, and cost-effective material favored across many industries. Widely applied in manufacturing, construction, and automotive sectors, understanding their properties and applications helps explain why Hot-Dip Galvanized Steel is so extensively used and valued.
Properties of Hot-Dip Galvanized Steel Products
Corrosion Protection
Hot-Dip Galvanized Steel Products benefit from galvanizing, which provides cathodic protection. This means that even if the steel surface is scratched in harsh environments, such as marine, industrial, or high-humidity settings, the surrounding zinc continues to protect the underlying steel from corrosion.
Durability
Hot-Dip Galvanized Steel Products, with a metallurgical bond between the zinc coating and the steel substrate, offer enhanced wear resistance, making them perfect for construction, infrastructure, and utility applications.
Longevity
Hot-Dip Galvanized Steel Products, protected by a zinc coating, extend the lifespan of structures and components by providing strong corrosion resistance and slowing down surface degradation, ensuring durability and visual appeal for decades, even in outdoor or industrial environments.
Available Size of Hot-Dip Galvanized Steel
| Base Type | Thickness (mm) | Width (mm) |
| Cold Rolled Base | 0.19-2.00 | 700-1538 |
| Hot Rolled Base | 1.20-4.60 | 670-1300 |
* The tables above show the widest range of product dimensions. For a detailed acceptable order range, please contact our Marketing & CS Division.
Structure of Hot Dip Galvanized Steel Products
Product Specifications of Hot-Dip Galvanized Steel
| JIS G 3302 | ASTM A653M | AS1397 | EN 10346 | ||
| Specifications |
Hot-rolled Base: SGHC SGHD SGH 340 400 440 490 540 |
Cold-rolled Base: SGCC SGCD 1~3 SGC 340 400 440 490 570 |
DS DDS CS TYPE A, B, C FS TYPE A, B SS GRADE 33(230) 37(255) 40(275) 50(340) CLASS 1~3 80(550) CLASS 1~3 |
G1~G3 G250 300 350 400 450 550 |
DX51-52-53D S220GD (250 280 320 350 550) |
| Base Steel Thickness (mm) | 1.2 - 4.60 |
SGCD1~3: 0.27 - 2.0 SGCC/SGC: 0.19 - 2.0 |
DS/DDS: 0.27 - 2.0 CS/FS: 0.19 - 4.50 SS GRADE 33~80: 0.19 - 4.50 |
G1: 0.19 - 4.50 G2&G3: 0.27 - 2.0 G250~550GD: 0.19 - 4.6 |
DX51D: 0.19 - 4.50 DX52~53D: 0.27 - 2.0 S220~550GD: 0.19 - 4.6 |
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Z08 Z10 Z12 Z14 Z18 Z20 Z22 Z25 Z27 Z35 Z37 Z45 Z60 |
Z90 Z120 Z180 Z275 Z305 Z350 Z450 Z500 Z550 Z600 |
Z100 Z200 Z275 Z350 Z450 Z600 |
Z100 Z140 Z200 Z225 Z275 Z350 Z450 Z600 |
|
| Remarks | 1. Tolerance for thickness, width, flatness, and so on conforms to individual product specification. 2. All products with a thickness of 2.0mm and under can be skin passed. 3. The specification for thicknesses under 1.6mm for hot-rolled base metal according to JIS G3302 will be the same as for thicknesses 1.6mm. 4. The coil inside diameters can be either 508mm or 610mm. The maximum coil outside diameter is 2000mm. 5. Please make inquiries to our Marketing & CS Division for products with special specifications. Coating mass beyond the specifications above can be provided by Yieh Corp. upon mutual agreement between customer and us. 6. Coating mass Z08, Z09 and Z90 only apply for cold-rolled base metals. |
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Surface Finish and Coating Type
| Texture | Coating Type | Production Method | Characteristics | Application | Protection |
 |
Regular Spangle | Spangle produced by crystallization solidification. | Good adhesion and weathering resistance | Guardrails, ventilation ducts, gutters, and downspouts. | Chromating, Oiled, Resin Coated (Anti-Fingerprint), or Green Treatment (Environmentally Friendly Anti-Fingerprint) |
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Minimized (Zero) Spangle | Control the composition of pot to achieve minimized spangle. | Uniform surface and attractive finish after painting. | Gutters and downspouts, ceiling suspension bars, and shutter door rails. | |
 |
Extra Smooth Surface | Temper rolling produces an extra smooth surface. |
Uniform surface and attractive finish after painting. |
Gutter and downspouts, auto parts, electrical appliances, refrigerator appliances, fridges, and ovens. | |
 |
Galvannealed | The galvanized strip is heated to alloy the zinc-iron layer. | No spangle and rough surface. Good printability and weldability. | Automotive stamping parts, automotive parts, shutter doors, signs, vending machines, refrigerators, washing machines, and showcases. |
Packaging of Hot-Dip Galvanized Steel Products
| Protective Wrapping and Labeling | Reinforcement and Strapping | Export Palletizing |
| The steel coil is wrapped with kraft paper or a waterproof liner, and edge protectors are applied to both the inner and outer circumferences to prevent impact damage. A label is then affixed to ensure product traceability and facilitate easy identification during handling and transportation. | The entire coil is securely bound with steel straps to maintain structural integrity and prevent shifting during transport. This reinforcement also helps protect the packaging from loosening and exposure to moisture. | The coil is positioned upright on wooden pallets to ensure stability and make forklift handling easier, which helps minimize the risk of damage during international shipping. |
Application of Coated Steel
Guardrails
Hot-Dip Galvanized Steel Products provide robust protection for guardrails on roads and highways. Their resistance to weathering and corrosion is critical for safety infrastructure, maintaining strength and reliability under long-term outdoor exposure.
Home Appliances
Hot-Dip Galvanized Steel Products are preferred for their excellent resistance to moisture and everyday wear, which extends the lifespan of appliances such as refrigerators, washing machines, and ovens. The galvanized coating prevents rust and corrosion, maintaining both the structural integrity and aesthetic appeal of these appliances over time.
Solar Mounting Structures
Hot-Dip Galvanized Steel Products are a preferred material for solar mounting structures, offering long-term durability, superior corrosion protection, and reliable structural strength in harsh outdoor environments. Amid the growing global demand for sustainable energy, galvanized steel plays a critical role in ensuring the stability and longevity of solar power systems.
Ventilation Ducts
Hot-Dip Galvanized Steel Products provide excellent resistance to corrosion caused by atmospheric moisture and pollutants. This helps ventilation ducts deliver clean and efficient airflow, improving indoor air quality while minimizing maintenance requirements.
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- Tel :+886-7-615-1000
- Fax :+886-7-615-3000
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