Large Spangle Galvanized Steel Sheet Zinc 40~275g GI Plate for Roofing & Construction

Large Spangle Galvanized Steel Sheet is produced through a hot-dip galvanizing process, forming a distinctive and attractive zinc crystal pattern (big spangle) on the surface. It provides excellent corrosion resistance and is widely used in roofing, wall cladding, ducting, and general construction.

Compared with zero spangle sheets, large spangle GI sheets offer a more decorative appearance and are preferred in visible applications.

• Attractive large zinc spangle surface (decorative finish)
• Excellent corrosion resistance
• Strong adhesion of zinc coating
• Easy to process (cutting, bending, stamping)
• Cost-effective solution for construction
• Suitable for outdoor applications

• Roofing sheets
• Wall panels
• Steel structure buildings
• Ventilation ducts
• Fencing and gates
• Household appliances (non-decorative internal parts)
• Agricultural buildings

Standard export seaworthy packing

Plastic film + waterproof paper + steel sheet cover

Steel strips binding

Wooden pallet optional

20GP / 40HQ container loading

Large spangle refers to visible zinc crystal patterns formed during the hot-dip galvanizing process, giving the sheet a shiny and decorative appearance.

Not recommended for high-end painting, as the uneven surface may affect coating adhesion. Zero spangle is better for painting.

Z30-Z80 → Indoor use

Z100-Z180 → General outdoor

Z275 → High corrosion environment (recommended)

Normal environment: 10-20 years

Coastal/harsh environment: depends on zinc coating thickness