NEWS
Do galvanized steel coils corrode easily in coastal high-salt environments? GNEE launched high salt spray resistant galvanized steel coils, greatly improving adaptability to marine environments through zinc layer alloying upgrade.
We provide high zinc layer coils Z275-Z350 with thickness 1.0-8.0mm, supporting slitting and leveling processing, paired with salt spray test reports, suitable for coastal infrastructure, port facilities and other scenarios.
Galvanized steel coils are core anti-corrosion materials for coastal projects, but they are prone to zinc layer peeling and pitting in high salt spray and high humidity environments. The high salt spray resistant type can effectively solve this problem.
Galvanized steel coils
-
Core Data of Salt Spray Resistance Performance
Tested by a third party, the high salt spray galvanized steel coils outperform conventional products:
|
Test Item |
Test Standard |
Performance of High Salt Spray Resistant Type |
Performance of Conventional Galvanized Steel Coils |
|---|---|---|---|
|
Neutral Salt Spray Test |
ASTM B117 |
No red rust for 1500h |
Red rust appears after 800h |
|
Cyclic Corrosion Test |
ISO 9227 |
Corrosion area ≤3% after 600 cycles |
Corrosion area ≥10% after 400 cycles |
|
Zinc Layer Adhesion |
EN ISO 7438 |
No peeling at 180° bending (Grade 0) |
Local peeling at 180° bending (Grade 1) |
-
Product Specifications & Project Adaptation
High salt spray galvanized steel coils have complete specifications, accurately adapting to various coastal projects:
|
Project Type |
Thickness Range |
Zinc Layer Specification |
Processing Method |
|---|---|---|---|
|
Coastal Guardrails & Fences |
1.5-3.0mm |
Z275 |
Slitting, leveling, bending |
|
Port Storage Facilities |
4.0-8.0mm |
Z350 |
Leveling, welding pretreatment |
With excellent anti-corrosion performance, high salt spray galvanized steel coils provide long-term protection for coastal projects and significantly reduce subsequent maintenance costs.
GNEE specializes in scenario-based upgrades of galvanized steel coils. Welcome to consult exclusive solutions for coastal projects and obtain detailed performance test reports and quotes.
Available Steel Grade
|
Available Steel Grade(Ensure weight and support third-party testing) |
||||
|
Steel grade |
Coating |
Yield(MPA) |
Tensile(MPA) |
Elongation(%) |
|
DX51D |
Z,ZF |
-- |
270-500 |
20 |
|
DX52D |
Z,ZF |
140-300 |
270-420 |
22 |
|
DX53D |
Z,ZF |
140-260 |
270-380 |
26 |
|
DX54D |
Z,ZF |
140-220 |
270-350 |
30 |
|
S220GD |
Z,ZF |
220 |
300 |
18 |
|
S250GD |
Z,ZF |
250 |
330 |
17 |
|
S280GD |
Z,ZF |
280 |
360 |
16 |
|
S320GD |
Z,ZF |
320 |
390 |
15 |
|
S350GD |
Z,ZF |
350 |
420 |
14 |
|
S400GD |
Z,ZF |
400 |
470 |
-- |
|
S450GD |
Z,ZF |
450 |
530 |
-- |
|
S500GD |
Z,ZF |
500 |
560 |
-- |
|
Select type Galvanized Steel based on requirements |
||||