NEWS
Galvanized steel coils
In need of galvanized steel coils for high-end manufacturing? GNEE has achieved large-scale production of high-precision galvanized steel coils, precisely controlling dimensional tolerance and zinc layer uniformity to break through material bottlenecks in high-end scenarios.
We offer customized galvanized steel coils with thickness 0.2-6.0mm and width 800-1800mm, optional zinc coating weight Z60-Z350, supporting personalized surface treatment and complete quality inspection reports throughout the process.
Galvanized steel coils are anti-corrosive steel products with a dense zinc layer formed on the coil surface via hot-dip galvanizing. Widely used in home appliances, automotive, and electronics industries, they combine corrosion resistance and formability.
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Core Parameters of High-Precision Galvanized Steel Coils
The products have achieved comprehensive breakthroughs in precision and performance, meeting strict requirements of high-end manufacturing:
|
Parameter Category |
Specific Indicators |
Industry General Standard |
Application Value |
|---|---|---|---|
|
Dimensional Tolerance |
Thickness tolerance ±0.02mm, width tolerance ±1mm |
Thickness tolerance ±0.05mm, width tolerance ±3mm |
Reducing subsequent processing loss |
|
Zinc Layer Uniformity |
Deviation ≤±5%, no local exposure |
Deviation ≤±10% |
Ensuring overall anti-corrosion consistency |
|
Surface Precision |
Ra≤1.2μm, no oxidation spots |
Ra≤2.0μm |
Adapting to high-end appearance part needs |
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Applicable Scenarios & Customization Services
High-precision galvanized steel coils accurately match high-end needs in multiple fields with outstanding customization capabilities:
|
Application Field |
Recommended Specifications |
Customization Services |
Core Advantages |
|---|---|---|---|
|
Automotive Parts |
0.5-2.0mm, Z180-Z275 |
Spangle-free treatment, pre-bending oiling |
Excellent formability and strong corrosion resistance |
|
High-End Home Appliance Panels |
0.2-0.8mm, Z120-Z180 |
Mirror finish, fingerprint-resistant coating |
Smooth surface and outstanding appearance |
The mass production of high-precision galvanized steel coils provides a core material solution with both precision and performance for high-end manufacturing, helping improve product quality and efficiency.
GNEE focuses on the high-end upgrade of galvanized steel coils. Welcome to contact us for free sample testing and customize exclusive material solutions for high-end manufacturing.
- Available Steel Grade
|
Standard |
Grade |
C |
Si |
Mn |
P |
S |
Ti |
|
Forcold Forming Chinese Standard |
DX51D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
DX52D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX53D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX54D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX56D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX57D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
Forcold Forming Japanese Standard |
SGCC |
0.15 |
0.50 |
0.80 |
0.050 |
0.030 |
0.025 |
|
SGCD1 |
0.12 |
0.50 |
0.60 |
0.040 |
0.030 |
0.025 |
|
|
SGCD3 |
0.08 |
0.50 |
0.45 |
0.030 |
0.030 |
0.025 |
|
|
SGCD4 |
0.06 |
0.50 |
0.45 |
0.030 |
0.030 |
0.025 |
|
|
For Structure Japanese Standard |
SGC340 |
0.25 |
0.50 |
1.70 |
0.200 |
0.035 |
0.025 |
|
SGC400 |
0.25 |
0.50 |
1.70 |
0.200 |
0.035 |
0.150 |
|
|
SGC490 |
0.30 |
0.50 |
2.00 |
0.200 |
0.035 |
0.025 |
|
|
SGC510 |
0.30 |
0.50 |
2.50 |
0.200 |
0.035 |
0.025 |
|
|
For Structure AISI Standard |
S220GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
S250GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S280GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S320GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S350GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.150 |
|
|
S550GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.150 |
- Mechanical Properties
|
Grade |
Yield Strength MPa≥ |
Tensile Strength MPa≥ |
Elongation A%≥ |
|
DX51D Z/ZM/AZ/AM |
240-380 |
270-500 |
22 |
|
DX52D Z/ZM/AZ/AM |
140-300 |
270-420 |
26 |
|
DX53D Z/ZM/AZ/AM |
140-260 |
270-380 |
30 |
|
DX54D Z/ZM/AZ/AM |
120-220 |
260-350 |
36 |
|
S220GD Z/ZM/AM |
220 |
300 |
20 |
|
S250GD Z/ZM/AZ/AM |
250 |
330 |
19 |
|
S280GD Z/ZM/AM |
280 |
360 |
18 |
|
S300GD A/AM |
300 |
380 |
18 |
|
S320GD Z/ZM/AM |
320 |
390 |
17 |
|
S350GD Z/ZM/AZ/AM |
350 |
420 |
16 |
|
S450GD A/AM |
450 |
480 |
15 |
|
S550GD Z/ZM/AZ/AM |
550 |
550 |
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