galvanized steel plate
Are you searching for high-quality galvanized steel plates with strong corrosion resistance? Your search ends here. As a direct factory with 20 years of steel manufacturing experience, GNEE Steel provides premium S350GD+Z275 galvanized steel plate at factory-direct prices. In this guide, we'll explain its key features, technical specs, and help you calculate total landing costs including freight.
Packaging and shipping
Galvanized steel is steel coated with zinc to prevent rust. The zinc layer acts as a barrier, protecting the base steel from moisture and oxygen.
It's widely used in construction, automotive, and home appliances. Common grades include S250GD, S350GD, and S450GD, each with different strength levels.
S350GD+Z275 refers to S350GD-grade steel with Z275 zinc coating (275g/m²), offering excellent durability for harsh environments.
Chemical Composition of S350GD+Z275 Galvanized Steel Plate
The chemical makeup of S350GD+Z275 ensures its superior performance. Below is the standard composition:
| Element | Content (Max, %) |
|---|---|
| C | 0.12 |
| Si | 0.50 |
| Mn | 1.60 |
| P | 0.035 |
| S | 0.035 |
| Al | 0.020 |
| Ti | 0.22 |
This composition balances strength and formability, making it suitable for various processing methods.
Mechanical Properties of S350GD+Z275 Galvanized Steel Plate
S350GD+Z275's mechanical properties make it ideal for structural applications. See the key indicators below:
| Property | Standard Value |
|---|---|
| Yield Strength | ≥350 MPa |
| Tensile Strength | 420-560 MPa |
| Elongation (A80mm) | ≥18% |
| Bending Test | D=2t, 180° without cracking |
The Z275 zinc coating adds exceptional corrosion resistance, extending the plate's service life.
Standard Sizes of S350GD+Z275 Galvanized Steel Plate
GNEE Steel offers S350GD+Z275 in various standard sizes to meet project needs:
| Thickness | Width | Length |
|---|---|---|
| 0.8mm-3.0mm | 1000mm-1500mm | 2000mm-6000mm |
| 3.0mm-6.0mm | 1220mm-1500mm | 2440mm-6000mm |
Custom sizes are available upon request, with minimum order quantities flexible for bulk needs.
- Spangle
The "spangle" is a type of surface morphology found on hot-dip galvanized (pure zinc-coated) steel coils. When the steel strip passes through the zinc pot, its surface becomes coated with liquid zinc. As the zinc layer naturally solidifies, zinc grains nucleate and grow, forming what is known as "spangle."
The name "spangle" comes from the fact that the complete zinc crystals display a snowflake-like pattern, which is quite vivid and descriptive.
- Zinc Thickness
| Zinc Coating Grade | Zinc Coating (g/m²) | Corrosion Resistance | Typical Applications | Remarks |
| Z30 | 30 | Very low | Indoor parts, home appliance inner panels, ventilation ducts | Not suitable for outdoor use |
| Z60 | 60 |
Low |
Indoor structures, temporary facilities | Low cost |
| Z80 | 80 | Medium | Light steel structures, base metal for PPGI | Good cost performance |
| Z100 | 100 | Medium | PPGI, fencing, general construction
|
Common export grade |
| Z120 | 120 | Medium-High |
|
Longer service life |
| Z140 | 140 | Medium-High | Industrial buildings, agricultural facilities | Suitable for outdoor use |
| Z180 | 180 | High | Long-term outdoor structures, equipment housings
|
Recommended for outdoor use |
| Z200 | 200 | Very high | Humid environments, heavy structures
|
Higher cost |
| Z275 | 275 | Excellent
|
Coastal areas, solar mounting systems, high-corrosion environments | High standard |
S350GD+Z275 galvanized steel plate combines high strength and superior corrosion resistance, making it perfect for construction and automotive use. GNEE Steel's factory pricing and strict quality control ensure you get the best value.
To get the 2026 latest price list or request a custom quote, please contact our sales team now. Our experts will help you find the perfect solution for your project.
- 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 |
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