Cold-Rolled Galvanized Steel Coil
China's leading cold-rolled galvanized steel coil manufacturer boasts strong wholesale and processing capabilities. In wholesale, relying on a large-scale production base, its annual capacity reaches millions of tons, with ample stock available. Specifications cover thicknesses of 0.2-5.0mm and widths of 600-1500mm, supporting customized zinc coatings of 60-275g/m², and strong bulk supply capabilities. It also provides deep processing services such as slitting, leveling, bending, and stamping.
Cold-rolled galvanized steel coils are coil products made from high-quality cold-rolled steel coils. After pretreatment such as pickling and degreasing, a uniform zinc coating is formed on the surface through hot-dip or electro-galvanizing processes. They comply with GB/T 2518-2019 standards, combining the high precision of cold-rolled steel with the corrosion resistance of a galvanized layer. They are a core substrate in high-end manufacturing fields and are widely used in industries such as home appliances, automobiles, and precision instruments.
Core Advantages:
1. High dimensional accuracy: The sheet is straight, with thickness tolerance controllable to ±0.02mm. The surface is smooth and free of zinc spangles, requiring no secondary polishing to meet aesthetic requirements.
2. Excellent processing performance: High elongation, suitable for complex processes such as precision stamping, bending, and welding. It is less prone to zinc layer peeling and has strong coating adhesion.
3. Reliable corrosion resistance: The zinc layer bonds tightly to the substrate, effectively resisting humid and mildly corrosive environments. Indoor service life can reach 15-25 years.
4. Outstanding cost-effectiveness: Lower cost than stainless steel, balancing aesthetics and practicality, conforming to low-carbon and environmentally friendly trends, and 100% recyclable.
Hot-dip galvanized steel coil VS Cold-rolled galvanized steel coil
|
Comparison Items: |
Cold-rolled galvanized steel coils |
Hot-dip galvanized steel coils |
|
Substrate Type |
Using cold-rolled sheet as the base material, the sheet surface is flat and the hardness is uniform. |
Can use cold-rolled or hot-rolled sheets as the base material; thicker specifications often use hot-rolled base materials. |
|
Zinc Plating Process |
Mostly electro-galvanized, the zinc layer is deposited by electrolysis at room temperature; hot-dip galvanizing is also possible on cold-rolled bases. |
Hot-dip galvanizing involves immersing the steel sheet in molten zinc at approximately 450℃ to form a coating. |
|
Surface Condition |
Smooth and delicate surface, no zinc spots, high flatness, and exquisite appearance. |
Often contains zinc spangles; the surface is slightly rougher and less flat. |
|
Zinc Layer Thickness |
The coating is relatively thin, generally 10-50 g/m². |
The coating is relatively thick, typically 80–275 g/m², with high-zinc coatings reaching 600 g/m². |
|
Dimensional Accuracy |
Extremely high precision, small thickness tolerance, and straight sheet shape. |
Good precision, slightly lower than cold-rolled galvanizing, meeting general structural requirements. |
|
Coating Adhesion |
Physical adhesion, moderate bonding strength, prone to zinc peeling during severe bending. |
Metallurgically bonded, strong adhesion, and not easily peeled off. |
|
Corrosion Resistance |
Basic corrosion protection, suitable for dry indoor environments. |
Strong corrosion resistance, suitable for outdoor and highly corrosive environments. |
|
Processability |
Suitable for precision stamping, deep drawing, and laser cutting. |
Suitable for bending, welding, forming, and structural component processing. |
|
Product Price |
Mid-to-high-end, slightly higher unit price. |
Higher cost-effectiveness and wider application. |
|
Main Applications |
Applications include appliance housings, electronic chassis, instrument panels, and interior parts. |
Building steel structures, photovoltaic supports, railings, pipes, outdoor components. |
Hot Tags: Cold-Rolled Galvanized Steel Coil Supplier, Galvanized Steel Coil Manufacturer, CRC Sheet Steel in Stock
Related Category
Send Inquiry
Contact Info
-
Address
Hanyu Jingu, High-tech Zone, Jinan City, Shandong Province, China
-
Tel
-
E-mail
For inquiries about Carbon Steel, Stainless Steel, Galvanized Steel or price list, please leave your email to us and we will be in touch within 24 hours.
