Product Specification

Z30-Z275 CGLCC Prepainted Galvalume Steel Coil For Building Industry

PPGL Steel Coil Introduction:

HUIYI Z30-Z275 CGLCC prepainted steel coils represent a specialized advancement in building material technology. Engineered with a significantly heavier zinc-aluminum coating (Z30 to Z275 g/m²), this product is specifically formulated to deliver exceptional long-term corrosion resistance and structural longevity for the building industry. It is the optimal choice for projects in demanding environments where material failure is not an option, providing a robust protective barrier that outperforms standard coated coils.

Technical Parameters:

Key Applications:

• Industrial & Commercial Building Envelopes: Primary material for wall and roof cladding on factories, warehouses, and agricultural buildings requiring extreme durability.

• Structural & Sandwich Panels: Used as the exterior skin in insulated sandwich panels, where the heavy coating ensures performance over decades.

• Critical Infrastructure Components: Suitable for roofing and siding on transportation hubs, utility buildings, and processing plants.

• High-Wear Architectural Elements: Used for gutters, downpipes, flashing, and other building accessories where corrosion resistance is paramount.

Packing And Shipping:

Each coil is protected with VCI anti-rust paper, reinforced kraft paper, and waterproof PE film. Edges are secured with PP edge guards and steel strapping to prevent coating damage. For export, coils are mounted on ISPM15-certified wooden pallets or crated. All shipments include detailed, waterproof labels with coating mass (Z-value), specifications, and batch traceability. Desiccant bags are standard for all international shipments.

FAQ:

Q1: What does "Z30-Z275" specifically mean for my building project?
A1: The "Z" number indicates the total coating mass in grams per square meter (g/m²) on both sides of the steel. Z275, for example, offers over 9 times the zinc-aluminum coating of a standard Z27 product, providing exponentially better galvanic protection, which is crucial for building longevity.

Q2: Is this coil suitable for coastal or high-humidity building sites?
A2: Absolutely. This is a primary application. The heavy Galvalume coating (Z60 and above) offers exceptional resistance to salt spray corrosion, making it a preferred choice for coastal resorts, port facilities, and buildings in tropical climates.

Q3: Can we use this for structural framing or load-bearing elements?
A3: While it offers superior corrosion protection for structural components, the CGLCC substrate is commercial quality. It is perfect for cladding and panels. For primary load-bearing frames, a structural-grade steel specification should be consulted alongside this coated product.

Q4: How does the pricing compare to standard PPGI or lighter-coated CGLCC?
A4: Due to the higher consumption of zinc-aluminum alloy, the Z30-Z275 series commands a premium over standard coatings. However, for building projects where lifecycle cost, maintenance budgets, and failure prevention are calculated, it delivers a far superior Return on Investment (ROI) and is more cost-effective than standard-grade materials in the long term.