DX51D+Z Anti-Rust Galvanized Steel Coil For Infrastructure Project
Product Description
Engineered for demanding infrastructure applications, our DX51D+Z Anti-Rust Galvanized Steel Coil delivers exceptional corrosion resistance through a specialized chromate passivation process. The treatment forms a dense protective barrier that prevents white rust formation during outdoor storage and pre-construction phases. With zinc coating grades Z90-Z275 and salt spray resistance up to 1,200 hours, this coil maintains structural integrity in coastal and high-humidity environments. Certified to ASTM A653 and EN 10346 standards, it features enhanced adhesion properties for subsequent painting or powder coating processes. Ideal for bridges, transmission towers, and highway guardrails where long-term corrosion protection is critical.
Technical Parameters
| Parameter | Specification |
| Base Material | DX51D+Z (ASTM A653, EN 10346) |
| Thickness | 0.12mm - 2.0mm(±0.02mm) |
| Width | 600mm - 1,500mm |
| Coating Weight | Z100-Z275 (100-275g/m²) |
| Surface Treatment | Chromated Passivation |
| Salt Spray Resistance | 1,200hrs (ASTM B117) |
| Coil ID | 508mm/610mm |
| Coil Weight | 3-8 Tons |
Infrastructure Applications
Bridge Components: Corrosion-resistant structural elements for coastal and river-crossing bridges
Power Transmission: Towers and substation structures in corrosive industrial environments
Highway Systems: Guardrails, sign supports, and noise barrier frameworks
Public Utilities: Electrical enclosure boxes and drainage system components
Packing and Shipping
We ensure secure delivery with VCI+PE dual-layer waterproof packaging and reinforced edge guards for optimal corrosion protection. Global shipping options are available via FOB/CIF, with project quantities delivered within 25-30 days. Each shipment includes pre-shipment inspection and moisture indicators for quality assurance.
FAQ
Q1: Does the chromate treatment affect the welding performance or paint adhesion of the steel coil?
A1: Not at all. Our advanced trivalent chromium passivation process is specifically formulated to be non-interfering. It creates a thin, uniform layer that provides superior anti-white rust protection without compromising surface properties. This ensures excellent weldability with no spatter issues and, simultaneously, enhances paint adhesion for subsequent coating processes, serving as an ideal pretreatment base.
Q2: What are the available options for custom-cut sheets, and what is the dimensional tolerance?
A2: We specialize in providing custom-cut sheets tailored to your project needs. The maximum standard length we can supply is 6 meters, with a range of 3 to 6 meters available. All shearing is performed with high-precision equipment, guaranteeing mill-certified dimensional accuracy and clean, burr-free edges, ready for immediate use in your fabrication process.
Q3: What quality documentation accompanies the material?
A3: We provide full traceability and quality assurance. Each batch of material is supplied with an EN 10204 3.1 certificate, which is a mandatory, independent inspection certificate that validates the chemical composition and mechanical properties against the order specifications. This ensures full compliance for your infrastructure projects and simplifies your own quality control procedures.
