Engineered for high-stress applications, BOMIS Steel’s S350GD galvanized products deliver an exceptional combination of high yield strength (≥ 350 MPa), superior corrosion resistance, and a flawless surface finish.
Backed by dual state-of-the-art hot-dip galvanizing lines, our manufacturing facility boasts the scalable production capacity required to fulfill high-volume bulk orders reliably and on schedule. Whether your project demands standard dimensions or custom processing, we are your trusted partner for structural steel solutions.
Available Specifications & Forms:
Thickness Range: 0.12 mm – 6.0 mm
Standard Widths: 600 mm – 1500 mm
Product Forms: Coils, Cut-to-length Sheets, Slit Strips, and Structural Pipes
Manufactured strictly to European EN 10346 standards, BOMIS Steel’s S350GD is engineered for uncompromising structural performance. Here is what the designation means for your engineering projects: 1mm Aluminium Sheet
“S” – Structural Grade:
Classified specifically for structural applications, ensuring the material provides a highly reliable, load-bearing foundation for your building or manufacturing systems.
“350” – 350 MPa Yield Strength:
Guarantees a robust minimum yield strength of 350 Megapascals. This high-strength profile allows for superior mechanical stability, even under extreme stress and heavy payloads.
“GD” – Hot-Dip Galvanized:
Signifies a premium hot-dip galvanizing process. The steel substrate is metallurgically bonded with a protective zinc layer, delivering outstanding, long-term corrosion resistance in harsh environments.
For projects requiring the heaviest zinc protection, see our dedicated S350GD+Z275 HDG steel page with full mechanical properties, application guidelines, and a side-by-side comparison with DX51D+Z275.
| Parameter | Şartname |
| Malzeme Sınıfı | S350GD Galvanized Structural Steel |
| Yürütme Standardı | EN 10346 |
| Mevcut Formlar | Coil, Sheet, Slit Strip, Structural Pipe |
| Kalınlık | 0,12 mm - 6,0 mm |
| Genişlik | 600 mm – 1500 mm |
| Uzunluk | Custom Cut-to-Length processing available |
| Parameter | Şartname |
| Çinko Kaplama Kütlesi | 30 g/m² – 275 g/m² (Double-sided) |
| Pulcuklu Kaplama | Zero, Small, Regular, Large Spangle |
| Akma Dayanımı (Rp0,2) | ≥ 350 MPa |
| Çekme Mukavemeti (Rm) | 420 – 510 MPa |
| Uzatma (A80mm) |
≥ 16% (Thickness ≤ 2.0 mm)
≥ 18% (Thickness > 2.0 mm) |
| Yüzey İşlemi | Passivated, Oiled, Anti-Fingerprint (AFP), Phosphated, Pre-painted |
Uncompromising Structural Strength Engineered for maximum load-bearing performance. Featuring a guaranteed minimum yield strength of 350 MPa, this grade offers exceptional resistance to mechanical deformation, making it the premier choice for heavy structural framing and critical mechanical components.
Customizable Corrosion Protection Tailored defense for any environment. We offer a comprehensive range of hot-dip zinc coating weights (from Z30 to Z275). Our engineering team will help you specify the exact coating mass required to combat the specific corrosive elements of your project’s operating environment.
Superior Machinability & Fabrication Versatile processing without compromising the coating. Designed to support rigorous downstream fabrication, including deep stamping, precision bending, welding, and cutting. It serves as an ideal raw material for manufacturing galvanized pipes, structural steel sections, and corrugated roofing panels.
Premium Surface Aesthetics Flawless finish for architectural and industrial use. Our advanced hot-dip process delivers a smooth, high-gloss surface with strictly controlled spangle finishes (zero, minimized, or regular). It functions beautifully as an exposed architectural element or as the perfect substrate for high-quality pre-painting (PPGI).
S350GD Galvanized Steel Sheets & CoilsDesigned for expansive coverage and robust enclosure.
Construction: Large-span floor decking, structural sandwich panels, and heavy-duty roofing/wall systems for industrial factories.
Manufacturing: Electrical control cabinet shells, heavy machinery safety guards, and agricultural equipment casings.
Transportation: Automobile compartment panels,, and high-strength railroad interior substrates.
S350GD Galvanized Steel Pipes & TubesDelivering structural integrity and reliable fluid transport.
Infrastructure: Municipal street light poles, heavy-duty traffic sign structures, and structural scaffolding.
Industrial Utilities: Commercial HVAC ducting, high-pressure fire sprinkler systems, and robust water/gas pipelines.
Agricultural Frameworks: High-wind resistant greenhouse frames and structural support pillars.
S350GD Galvanized Structural Profiles (C/Z Purlins, Angle & Channel Steel)The high-yield backbone of modern infrastructure.
Renewable Energy: Heavy-duty solar photovoltaic (PV) mounting systems and transmission tower frameworks.
Architecture & Bridge: Curtain wall support keels, bridge guardrail bases, and steel structure factory beam-column connectors.
Industrial Facilities: Mechanical equipment racks, heavy conveyor belt brackets, and durable farm enclosure frameworks.
S350GD Galvanized Checkered PlatesEngineered for maximum slip resistance and industrial safety.
Industrial Safety: Factory elevated platforms, heavy-duty stair treads, and secure subway pedestrian passages.
Q1: What is the primary difference between S350GD and standard DX51D galvanized steel?
A: The key difference is structural integrity. DX51D is a commercial-grade steel intended for basic bending and forming. In contrast, S350GD is a structural grade with a guaranteed minimum yield strength of 350 MPa. It is engineered specifically for load-bearing applications like C/Z purlins, solar mounting brackets, and heavy machinery, where preventing deformation is critical.
Q2: Will the zinc coating peel or crack during deep bending or stamping?
A: No. BOMIS Steel uses advanced hot-dip galvanizing technology that creates a strong metallurgical bond between the zinc and the steel substrate. While the high 350 MPa yield strength requires higher forming force, the zinc coating possesses excellent adhesion and will not flake or peel during standard stamping, bending, or roll-forming processes.
Q3: Which zinc coating mass (Z30 – Z275) should I specify for my project?
A: The optimal coating depends on your project’s environmental exposure. For indoor or mild environments, Z60-Z120 is often sufficient. For outdoor structural applications exposed to rain, high humidity, or coastal elements, we strongly recommend specifying a heavier coating like Z275 to ensure a maximized lifespan. Our engineers can help you determine the most cost-effective specification.
Q4: Do you supply S350GD purely as coils, or can you provide finished structural profiles?
A: We offer flexible supply formats. In addition to supplying standard master coils, we operate extensive in-house processing facilities. We can supply precision cut-to-length sheets, slit strips, or even pre-formed structural profiles (such as C-channels or angle steel) customized to your project blueprints.
