structural steel S550GD
Looking for trusted structural steel S550GD plate manufacturers in China? You've come to the right place. As a direct factory with 20 years of structural steel experience, GNEE Steel supplies Structural Steel S550GD 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.
Structural steel S550GD plate is a high-strength galvanized steel product widely used in construction and engineering projects. It belongs to the group of hot-dip galvanized structural steels, offering excellent corrosion resistance and mechanical performance.
This type of steel plate is designed for load-bearing structures, where strength and durability are critical. Its galvanized coating ensures long-term protection against environmental factors like moisture and oxidation.
Galvanized steel sheet
Key Applications of Structural Steel S550GD Plate
Structural steel S550GD plate finds extensive use across various industries due to its superior properties. Here are the main application areas:
- Building Construction: Used for beams, columns, and framing systems in commercial and industrial buildings. The high strength of S550GD plate supports heavy loads efficiently.
- Infrastructure Projects: Ideal for bridges, highways, and tunnels where structural integrity under harsh conditions is essential.
- Manufacturing Industry: Applied in the production of heavy machinery, equipment frames, and transportation vehicles.
- Energy Sector: Suitable for power transmission towers and renewable energy structures like wind turbine foundations.
Each application leverages the unique combination of strength, corrosion resistance, and formability that S550GD plate offers.
Chemical Composition of Structural Steel S550GD Plate
The chemical composition of Structural Steel S550GD Plate directly influences its performance. Below is the standard chemical composition table compliant with EN 10346 standards:
| Element | Content (Max, %) | Role in Steel Performance |
|---|---|---|
| Carbon (C) | 0.18 | Enhances strength without excessive brittleness |
| Manganese (Mn) | 2.00 | Improves tensile strength and ductility |
| Silicon (Si) | 0.50 | Aids in deoxidation and enhances corrosion resistance |
| Phosphorus (P) | 0.030 | Controlled to prevent brittleness |
| Sulfur (S) | 0.025 | Minimized to improve weldability and toughness |
| Aluminum (Al) | 0.020 | Ensures fine grain structure for better mechanical properties |
This composition balance ensures S550GD plate meets the rigorous requirements of structural applications.
Mechanical Properties of Structural Steel S550GD Plate
Understanding the mechanical properties is crucial when selecting structural steel. The following table outlines the key mechanical properties of Structural Steel S550GD 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 without cracking |
These properties confirm that S550GD plate can withstand heavy loads and harsh environmental conditions.
Standard Sizes of Structural Steel S550GD Plate by GNEE STEEL
GNEE Steel offers Structural Steel S550GD Plate in a wide range of sizes to meet different project requirements. The standard size specifications are as follows:
| Thickness Range | Width Range | Length Range | Surface Treatment |
|---|---|---|---|
| 1.5mm - 20mm | 1000mm - 2000mm | 2000mm - 12000mm | Hot-dip galvanized (Zinc coating: 60-275 g/m²) |
| 21mm - 50mm | 1250mm - 2500mm | 3000mm - 12000mm | Hot-dip galvanized (Zinc coating: 80-275 g/m²) |
Custom sizes can be produced according to specific customer requirements with minimum order quantities.
2026 Latest Price of Structural Steel S550GD Plate
The price of Structural Steel S550GD Plate in 2026 is influenced by raw material costs, production capacity, and market demand. As a direct factory, GNEE Steel offers competitive factory prices:
Base Price Range: $850 - $950 per ton (ex-factory price, thickness 3-10mm)
- Price Factors:
Thickness: Thicker plates (over 15mm) may have a 10-15% price premium
Order Quantity: Bulk orders (over 50 tons) can enjoy 5-8% discount
Surface Coating: Higher zinc coating thickness increases cost by 3-7%
Delivery Time: Urgent orders (within 7 days) may incur additional fees
For an accurate quotation based on your specific requirements, please contact our sales team.
Why Choose GNEE STEEL for Structural Steel S550GD Plate?
When selecting a supplier for Structural Steel S550GD Plate, GNEE Steel stands out for several reasons:
20 Years of Experience: Specialized in structural steel production with mature manufacturing processes.
Quality Certification: All products meet EN 10346, ISO 9001, and CE standards.
Full Production Control: From raw material selection to final inspection, ensuring consistent quality.
Competitive Pricing: Direct factory supply eliminates middlemen, offering better prices.
Reliable Delivery: Average lead time of 10-15 days for standard orders, with flexible shipping options.
Our professional technical team also provides customized solutions for complex projects.
Structural Steel S550GD Plate is an excellent choice for high-strength structural applications, offering superior performance and durability. GNEE Steel, as a trusted manufacturer in China, provides high-quality S550GD plates at competitive prices with reliable delivery.
Whether you need standard sizes or custom specifications, we have the expertise to meet your requirements. Contact GNEE Steel today for a detailed quotation and technical consultation. Click here to get your 2026 latest price list of Structural Steel S550GD Plate now!
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Structural Steel Plate