Place of Origin：Shandong,China
Delivery Time： 20 days
upply Ability: 5000 Tons per Month
colour: We can customize the color based on your sample and the RAL color chart
MOQ: 18 Tons
Different minimum order quantities result in different product prices
If you need it, please contact our customer service as soon as possible
High-Strength Structural Steel for Engineered ExcellenceOur S350GD+Z High-Strength Structural PPGI Coils are specifically designed for applications requiring superior load-bearing capacity and structural integrity. Engineered to meet the rigorous EN 10346 standard for galvanized substrates, these coils are the preferred choice for industrial roofing, C/Z purlins, and deep-profile metal decking where mechanical performance is as critical as aesthetic appeal.
The S350GD AdvantageThe “S” in S350GD stands for Structural Steel, distinguishing it from commercial-grade ductile steels. This grade is defined by its guaranteed mechanical values:Minimum Yield Strength: $350 MPa$. This ensures that the panels can withstand higher wind loads and snow loads without permanent deformation.Tensile Strength: $420 MPa$, providing a safety margin for structural stability.Durability: The +Z (Zinc coating) provides essential cathodic protection, available in masses from Z100 to Z275 to suit various atmospheric environments.
Optimized Formability: Despite its high strength, our S350GD maintains excellent coating adhesion, rated for 2T-3T bending without peeling or micro-cracking.
Weight Reduction: The higher yield strength allows for the use of thinner gauges while maintaining the same structural load capacity, leading to significant material cost savings in large projects.
Consistent Flatness: Utilizing precision tension-leveling technology to ensure perfectly flat coils, essential for high-accuracy automated profiling lines.
| Feature | Requirement (EN 10346 / EN 10169) | Bomis Steel Performance |
| Yield Strength ($R_e$) | Min $350 MPa$ | Guaranteed $geq 350 MPa$ |
| Tensile Strength ($R_m$) | Min $420 MPa$ | $420 – 500 MPa$ |
| Elongation ($A_{80}$) | Min $16%$ | Excellent for structural forming |
| Zinc Coating Mass | Z40 – Z275 | Customizable |
| T-Bend Adhesion | $leq 3T$ | No cracking/peeling |
| Pencil Hardness | $geq$ H | High surface durability |
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Grade
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Material No
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Yield Strength MPamin
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Tensile strength MPa min
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Elongation A80 min
|
|
S350GD+Z
|
1.0529+Z
|
350
|
420
|
16
|
|
field
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Adapter components
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Core Values
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Construction engineering
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Roof/wall cladding, purlins, and steel structural components.
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High strength + weather resistance + low maintenance, suitable for factories / warehouses / stadiums.
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Logistics and transportation
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Shelving, pallets, truck body parts, container accessories
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High load-bearing capacity + corrosion resistance + easy processing, improving turnover efficiency.
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Industrial manufacturing
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Equipment casings, electrical cabinets, ventilation ducts
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Protection + Aesthetics + Formability, suitable for mass production.
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Agriculture and Municipal Affairs
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Greenhouse frame, guardrails, and signs.
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Weather-resistant and low-cost, suitable for long-term outdoor use.
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After the products are completed, they will undergo strict inspections before being packaged.
Superior Durability: Our coatings use high-quality pigments that resist fading and chalking for up to 15-20 years.
Precision Coating: We use advanced double-coat and double-bake (2C2B) processes to ensure uniform thickness and excellent adhesion.
Advanced Testing: Every batch undergoes rigorous testing, including the T-bend test, Pencil hardness test, and Salt spray test.
Customization: From matte finish to wood grain patterns, we provide versatile surface treatments to meet your architectural needs.
1.what is EN 10346 S350GD +Z Colour Coated Galvanized Coil
EN 10346 S350GD+Z is a hot-dip galvanized structural steel coil specified by European standards. It consists of a structural steel substrate with a yield strength of ≥350 MPa, continuously hot-dip galvanized with a pure zinc layer. It is suitable for structural components in construction, photovoltaic systems, and automotive applications, offering both high strength and corrosion resistance.
2.Are you a manufacturer or a trading company?
We are a factory with over 10 years of sales experience
3.How do you guarantee the quality?
1) Sourcing only from top-tier, certified mills.
2) Conducting our own rigorous in-house QC checks.
3) Providing a formal Mill Test Certificate and our quality warranty for every shipment.
