Engineered to meet the rigorous European EN 10346 standard, S550GD galvanized steel delivers exceptional structural integrity and high yield strength.
At BOMIS, we manufacture and supply this premium coated steel with highly customizable dimensions to fit your specific engineering requirements—offering precision thicknesses ranging from 0.13mm up to 6.0mm, and widths up to 1500mm.
| Category | Parameter | BOMIS Specification |
|
Dimensional Specifications 1mm Aluminium Sheet
|
Thickness | 0.13 mm – 6.0 mm (Precision tolerance controlled) |
| Width | Up to 1500 mm | |
| Length | Coil, or custom cut-to-length | |
| Available Forms | Steel Coil, Flat Sheet, Corrugated Roofing Sheet, Slit Strip | |
|
Coating & Surface
|
Manufacturing Standard | EN 10346 |
| Zinc Coating Mass | Z30 – Z275 (30 g/m² to 275 g/m²) | |
| Surface Spangle | Large Spangle, Regular Spangle, Small Spangle, Zero Spangle | |
| Surface Treatment | Chromated / Passivation, Anti-Fingerprint (AFP), Oiled, Dry | |
|
Mechanical Properties
|
Yield Strength | ≥ 550 MPa |
| Tensile Strength | 560 – 750 MPa | |
|
Mill & Logistics Capabilities
|
Coil ID (Inner Diameter) | 508 mm / 610 mm |
| Coil Weight | 2 – 5 MT (Metric Tons) | |
| Value-Added Processing | Slitting, Shearing, Punching, Profiling, Embossing | |
| Minimum Order Quantity | 18 MT (One 20ft Container) | |
| Lead Time | 7 – 35 Days (Subject to mill production schedule) | |
| Seaworthy Packaging | Mill standard export packing (Waterproof kraft paper, plastic film, galvanized steel envelope, securely strapped) |
Maximizing Structural Performance and Longevity
When engineering demanding structural projects, utilizing BOMIS S550GD high-strength steel offers an immediate competitive advantage. The superior yield strength allows for significant material down-gauging—reducing overall structural weight and optimizing your freight costs without compromising stress resistance.
To ensure your projects endure the test of time, we manufacture this high-strength substrate with highly customizable coating options. Beyond traditional zinc, BOMIS supplies premium Aluminum-Zinc (AZ) and advanced Zinc-Aluminum-Magnesium (ZAM) finishes, specifically formulated to resist corrosion in severe exposure environments.
While engineering-grade steel represents a premium upfront investment, its proven ability to last 3 to 5 times longer than conventional mild steel drastically minimizes future maintenance, delivering an unmatched Total Cost of Ownership (TCO) for your clients.
Renewable Energy & Critical Infrastructure
Engineered to withstand severe wind and snow loads, our S550GD steel is the preferred substrate for utility-scale solar photovoltaic (PV) mounting systems (including high-stress purlins and main beams). Its superior rigidity also makes it ideal for 5G telecommunication towers and high-voltage transmission structures, ensuring decades of stability in outdoor environments.
Automotive & Commercial Transportation
Capitalizing on the exceptional strength-to-weight ratio, automotive manufacturers utilize our high-strength coils to achieve vehicle lightweighting without sacrificing safety. It is widely specified for commercial truck and trailer chassis, heavy-duty body frames, EV (Electric Vehicle) battery pack enclosures, automotive seat frames, and impact-resistant bumper beams.
Heavy-Duty Industrial & Logistics Storage
Designed for maximum load-bearing performance and fatigue resistance, this grade is highly suited for industrial mega-warehousing and heavy-duty pallet racking systems. Furthermore, it provides the rugged durability required for manufacturing construction machinery, agricultural equipment, large-scale HVAC ventilation ductwork, and structural enclosures for electrical control cabinets.
Q1: What is the primary advantage of choosing S550GD over standard DX51D for my project?
A: The core advantage is material down-gauging. Standard DX51D is for bending and profiling, with a yield strength of around 140 MPa. S550GD is structural-grade steel with a guaranteed yield strength of ≥550 MPa. This allows engineers to use significantly thinner steel sheets to achieve the exact same load-bearing capacity, reducing the total structural weight and saving considerably on raw material and ocean freight costs.
Q2: Can your S550GD coils withstand high-humidity or coastal environments?
A: Yes. For severe environments (such as Southeast Asian monsoon climates or coastal infrastructure), we highly recommend specifying a heavier zinc coating (up to Z275 g/m²). Additionally, BOMIS provides advanced Aluminum-Zinc (AZ) and Zinc-Aluminum-Magnesium (ZAM) coating options on the S550GD substrate, which offer 3 to 5 times the corrosion resistance of standard hot-dipped galvanized steel.
Q3: Does your S550GD comply with international structural standards?
A: Absolutely. Our S550GD is manufactured strictly in accordance with the European Union EN 10346 standard, which is widely recognized and accepted in global markets, including South America and the Middle East, for solar mounting, roofing, and structural frameworks. A comprehensive Mill Test Certificate (MTC) is provided with every shipment.
Q4: What is the MOQ and typical lead time for custom S550GD orders?
A: As a direct manufacturer, our Minimum Order Quantity (MOQ) is typically 18 Metric Tons (equivalent to one 20ft container). Our standard production lead time ranges from 7 to 35 days, depending on your specific thickness, width requirements, and the current mill production schedule.
