Z275 Heavy Coated Galvanized Steel Coil For Coastal Guardrails
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Z275 Heavy Coated Galvanized Steel Coil For Coastal Guardrails Our Z275 Heavy Coated Galvanized Steel Coil is engineered for coastal guardrails, where chlorides, road
salts, and ocean mist accelerate corrosion. Through continuous
hot-dip galvanizing at ~450°C, the Z275 coating (275 g/m² double‑sided, ~20µm per side)
provides dual‑phase protection: a physical barrier and sacrificial zinc protection that even
protects cut edges. Under ASTM B117 salt spray testing, Z275
typically resists white rust for 1,000+ hours and red rust for over 1,500 hours (vs. 500‑800 hours for Z120), with some products
passing 3,000 hours. This yields 20‑25 years of maintenance‑free service, making Z275 the preferred choice
for AASHTO M180‑compliant coastal guardrails. Product Specifications
Main Applications · Coastal Guardrail Systems: Primary material for W‑beam and Thrie‑beam guardrails, transition sections, end terminals, and crash barriers along coastal highways where exposure to salt spray, high humidity, and de‑icing chemicals accelerates corrosion . · Bridge Railings & Parapets: Safety barriers on bridges and overpasses exposed to splashing seawater, road salts, and splashback from passing vehicles. · Highway Signage Gantries & Structural Supports: Overhead sign structures and roadside poles where structural integrity must withstand both corrosion and traffic pollution . · Noise Barriers & Wind Shields: Steel panel systems installed in coastal corridors requiring heavy‑duty corrosion protection against salt‑laden winds . Packing & Shipping Triple-Shield Packaging VCI anti-rust kraft paper inner layer, 0.3mm PE waterproof film with moisture indicators, steel-strapped pallets + edge guards (max. 8-ton coils). Global Logistics FOB/CIF from Chinese ports; 15-20 day delivery for Asia, 30-45 days globally. Quality Assurance Pre-shipment inspection and moisture indicators for transit protection. FAQ Do you provide samples? Yes, for regular sizes sample is free, buyer need to pay freight cost. How can I get a quotation? You can leave us message, and we will reply in time. And you can also find our contact details on the Contact page. How long is the delivery time? It depends on the order quantity, normally the delivery time takes around 15-30 working days. Please kindly contact us before ordering. |
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