NEWS
Pursuing longer corrosion resistance for galvanized steel sheets in outdoor projects? GNEE has launched a high corrosion-resistant series through core galvanizing process upgrades, precisely solving corrosion problems in salt spray and high-humidity environments.
We offer customized zinc coating weights (Z120-Z350), thicknesses (0.5-12.0mm), and surface treatment solutions, paired with comprehensive performance test reports to provide exclusive material support for outdoor infrastructure and coastal projects.
Galvanized steel sheets are anti-corrosive steel products with a zinc layer formed on the surface via hot-dip galvanizing or electro-galvanizing processes. Widely used in construction, transportation, and power industries, they achieve long-term rust prevention through the "sacrificial anode" principle.
Galvanized steel sheets
-
Core Highlights of Galvanizing Process Upgrade
This upgrade focuses on zinc layer adhesion and uniformity, with comprehensive optimization of technical parameters:
|
Process Indicator |
Traditional Process |
Upgraded Process |
Performance Improvement |
|---|---|---|---|
|
Zinc Layer Adhesion |
Grade 1 |
Grade 0 |
No peeling during bending and stamping |
|
Salt Spray Test Duration |
800h |
1200h+ |
50% longer anti-corrosion service life |
|
Zinc Layer Thickness Uniformity |
±15% |
±8% |
Avoiding local corrosion weaknesses |
-
Applicable Scenarios & Size Specifications
The upgraded galvanized steel sheets are suitable for various harsh scenarios, with flexible size customization:
|
Applicable Scenarios |
Thickness Range |
Width Range |
Recommended Zinc Coating |
|---|---|---|---|
|
Coastal Guardrails & Port Facilities |
2.0-8.0mm |
1000-3000mm |
Z275-Z350 |
|
Outdoor Power Brackets |
1.0-3.0mm |
800-2000mm |
Z180-Z275 |
With enhanced corrosion resistance and stability, the upgraded galvanized steel sheets provide long-term protection solutions for outdoor projects, reducing subsequent maintenance costs.
GNEE consistently optimizes galvanized steel sheet performance through technological iteration. Contact us to obtain exclusive product solutions and free sample testing, helping your projects improve quality and efficiency.
- 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 |