Galvalume Steel Coil (GL / AZ)

Premium 55% Al-Zn coated steel coil, featuring outstanding anti-corrosion and heat reflection performance. Factory direct supply, full custom sizes for roofing, construction and solar project worldwide.

Our Galvalume GL/AZ steel coil adopts 55% aluminum + 45% zinc alloy coating structure.

It combines the high anti-rust ability of aluminum and the sacrificial protection of zinc.

Compared with ordinary galvanized steel, GL/AZ owns much longer service life, excellent heat reflection, smooth surface and good bending forming performance.

It can be used directly or as base material for PPGL, fully customizable in thickness, width and coating weight to match your project budget and technical requirements.

Why Choose Our Galvalume Steel Coil

We know buyers are worried about short service life, easy rust, high temperature heat absorption and unstable coating quality.

Our GL/AZ coil solves all your troubles:

✅ 3–4 times corrosion resistance higher than regular GI coil

✅ Natural heat reflection, reduce building internal temperature

✅ Self-healing coating, small scratch won’t cause rust spread

✅ Smooth surface, good adhesion for painting and deep processing

✅ Stable alloy composition, no peeling, no color fading in long-term outdoor use

Galvalume Steel Coil Standard Specifications

Item	Details
Product Name	Galvalume Steel Coil (GL / AZ)
Base Material	Cold rolled steel coil
Grade	DX51D, DX52D, DX53D, S250GD, S350GD
Thickness	0.18mm – 2.0mm
Width	600mm – 1500mm
Coating Composition	55% Aluminum + 45% Zinc
Coating Weight	AZ50 – AZ150 g/m² Customizable
Surface Type	Regular spangle / Zero spangle
Execution Standard	ASTM A792, EN 10346, JIS G3321
Coil Weight	2–10 tons per coil
Custom Service	Size, coating, packaging all support customization

Super Anti-Corrosion

Al-Zn alloy structure provides long-term rust protection, suitable for coastal, humid and industrial harsh environment.

Heat Insulation & Energy Saving

High aluminum content reflects sunlight effectively, lower roof temperature and save cooling cost.

Good Processability

Excellent bending, cutting and forming performance, easy to make corrugated sheet, roof panel and accessories.

Factory Direct Reliable Supply

Stable monthly output, strict quality inspection, complete export documents, support bulk project order.

Roofing & Wall Cladding

Perfect for factory warehouses, industrial buildings and residential houses, maintaining stable performance in humid coastal and tropical areas.

Solar Support & Outdoor Structure

High anti-corrosion ability makes it the first choice for solar mounting brackets, guardrails and long-term outdoor steel structures.

PPGL Base Material

Smooth surface and strong paint adhesion, ideal substrate for producing prepainted galvalume steel coil PPGL.