NEWS
Not sure how to select the appropriate zinc coating weight for galvanized steel sheets in your project? GNEE has launched a professional selection guide, providing scientific suggestions based on scenario, cost, and service life requirements.
We cover the full range of zinc coating specifications (Z60-Z350), customizable according to project environment and service life, paired with zinc layer test reports to ensure accurate and compliant selection.
Package of galvanized steel sheets
The anti-corrosion capacity of galvanized steel sheets mainly depends on zinc coating weight-the thicker the zinc layer, the longer the anti-corrosion life. Different scenarios have significant differences in zinc coating weight requirements; improper selection may cause waste or premature corrosion.
-
Correspondence Between Zinc Coating Weight and Anti-Corrosion Life
Galvanized steel sheets with different zinc coating weights have significantly different anti-corrosion lives, suitable for different scenarios:
|
Zinc Coating Weight (Per Side) |
Service Life in Indoor Dry Environment |
Service Life in Outdoor Normal Environment |
Service Life in Coastal High-Salt Environment |
|---|---|---|---|
|
Z60-Z120 |
8-12 Years |
5-8 Years |
2-3 Years |
|
Z180-Z275 |
15-20 Years |
10-15 Years |
8-12 Years |
|
Z350 |
Over 25 Years |
Over 20 Years |
Over 15 Years |
-
Scientific Selection Suggestions & Specification Matching
Precise selection based on project needs, with flexible matching of galvanized steel sheet size and zinc coating:
|
Project Type |
Recommended Zinc Coating Weight |
Thickness Range |
Core Selection Principle |
|---|---|---|---|
|
Indoor Furniture & Home Appliance Accessories |
Z60-Z120 |
0.3-1.0mm |
Low cost & lightweight |
|
Municipal Road Guardrails & Street Light Poles |
Z180-Z275 |
1.5-4.0mm |
Balancing service life and cost |
|
Port & Offshore Platform Facilities |
Z350 |
5.0-12.0mm |
Ultimate corrosion resistance & long-term durability |
Scientific selection of zinc coating weight is key to exerting the anti-corrosion value of galvanized steel sheets, avoiding cost waste and ensuring project service life.
GNEE provides one-on-one galvanized steel sheet selection consulting services, customizing solutions based on project scenarios. Welcome to contact us for exclusive selection reports and quotes.
- 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 |