Galvanized Steel Plate
Looking for trusted S550GD galvanized steel plate suppliers in China? You've come to the right place. As a direct factory with 20 years of structural steel experience, GNEE Steel supplies high-quality S550GD Galvanized Steel Plate at factory prices. In this guide, we'll update the 2026 latest price list and help you calculate the total landing cost including freight and customs.
Galvanized Steel Plate
S550GD galvanized steel plate is a high-strength structural steel product with a hot-dip zinc coating. It belongs to the EN 10346 standard series, designed for load-bearing applications requiring corrosion resistance.
Common galvanized steel grades include S280GD, S350GD, S420GD, and S550GD, with S550GD offering the highest yield strength among them. Its primary uses span construction, infrastructure, and heavy machinery manufacturing.
Key Applications of S550GD Galvanized Steel Plate
S550GD galvanized steel plate's unique properties make it suitable for diverse industries:
- Building Construction: Used for roof trusses, wall frames, and support beams in commercial buildings. The galvanized coating prevents rust in outdoor or humid environments.
- Infrastructure Projects: Ideal for bridge components, highway guardrails, and transmission towers. Its high strength withstands heavy loads and harsh weather.
- Machinery Manufacturing: Applied in agricultural equipment, construction machinery frames, and container floors. Offers durability against mechanical wear.
- Automotive Industry: Used for truck chassis and trailer frames, where strength and corrosion resistance are critical.
Each application leverages the plate's balance of strength (≥550MPa yield) and zinc coating protection.
Chemical Composition of S550GD Galvanized Steel Plate
The chemical composition of S550GD Galvanized Steel Plate determines its mechanical performance. Below is the standard composition per EN 10346:
| Element | Content (Max, %) | Function |
|---|---|---|
| Carbon (C) | 0.18 | Enhances strength without reducing weldability |
| Manganese (Mn) | 2.00 | Improves tensile strength and formability |
| Silicon (Si) | 0.50 | Aids deoxidation and boosts corrosion resistance |
| Phosphorus (P) | 0.030 | Controlled to avoid brittleness |
| Sulfur (S) | 0.025 | Minimized to improve surface quality and weldability |
| Aluminum (Al) | 0.020 | Ensures fine grain structure for better toughness |
This composition ensures the plate meets strict structural safety standards.
Mechanical Properties of S550GD Galvanized Steel Plate
Understanding the mechanical properties is essential for application selection. The table below outlines key properties of S550GD Galvanized Steel Plate:
| Property | Standard Value | Test Condition |
|---|---|---|
| Yield Strength (ReH) | ≥550 MPa | Room temperature |
| Tensile Strength (Rm) | 600-730 MPa | Room temperature |
| Elongation (A80mm) | ≥12% | After galvanization |
| Impact Energy (KV) | ≥27 J | At -40°C |
| Bend Test | Pass | 180° bend, no cracking |
These properties confirm the plate's suitability for high-stress structural applications.
Standard Sizes of S550GD Galvanized Steel Plate
GNEE Steel offers S550GD Galvanized Steel Plate in standard and custom sizes to meet project needs:
| Thickness | Width Range | Length Range | Zinc Coating Weight |
|---|---|---|---|
| 1.5mm - 10mm | 1000mm - 2000mm | 2000mm - 6000mm | 60-180 g/m² |
| 11mm - 20mm | 1250mm - 2500mm | 3000mm - 12000mm | 80-220 g/m² |
| 21mm - 50mm | 1500mm - 2500mm | 4000mm - 12000mm | 100-275 g/m² |
Custom cutting and processing are available with a minimum order quantity of 5 tons.
2026 Price of S550GD Galvanized Steel Plate
The 2026 price of S550GD Galvanized Steel Plate at GNEE Steel is competitive and transparent:
Base Price Range: $860 - $960 per ton (ex-factory, standard thickness 3-10mm)
- Price Influencing Factors:
Thickness: Thicker plates (over 20mm) add 12-18% to the base price
Coating Weight: Heavy-duty coating (200+ g/m²) increases cost by 5-8%
Order Quantity: Bulk orders (50+ tons) qualify for 6-9% discounts
Delivery Time: Rush orders (within 7 days) incur 10% premium
For accurate pricing based on your specifications, contact our sales team.
S550GD Galvanized Steel Plate is a high-performance solution for structural applications requiring strength and corrosion resistance. GNEE Steel's direct factory supply ensures quality products at competitive 2026 prices, with flexible sizing options.
Whether you need standard or custom specifications, our 20 years of experience guarantee reliable products and service. Click here to contact GNEE Steel and get a personalized quotation for S550GD Galvanized Steel Plate today!
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Galvanized steel sheet packaging