Galvalume Steel Coils
Engineered for superior corrosion resistance, energy efficiency, and long-term performance across industrial and architectural applications.
Leading Galvalume Steel Coil Manufacturer – Hengze Steel
Discover the superior strength, corrosion resistance, and thermal performance of Galvalume steel coils—the ideal solution for demanding industrial and construction applications.
At Hengze Steel, our Galvalume coils feature a premium aluminum-zinc alloy coating composed of approximately 55% aluminum, 43.4% zinc, and 1.6% silicon. This advanced coating technology significantly enhances resistance to rust, oxidation, and high-temperature environments compared to traditional galvanized steel.
Engineered for long-term performance, our Galvalume steel is widely used in roofing, wall cladding, and structural components where both aesthetics and durability matter.
Galvalume Steel Coil Specification
| Parameter | Specification |
|---|---|
| Thickness | 0.12 – 4.00 mm (±0.02 mm tolerance, per ASTM A792 / EN 10346) |
| Width | 600 – 1250 mm standard; up to 1500 mm customizable |
| Al-Zn Coating | AZ30 – AZ275 g/m² (55% Aluminum, 43.5% Zinc, 1.5% Silicon) |
| Coil ID | 508 mm / 610 mm |
| Coil Weight | 2 – 8 metric tons |
| Spangle Options | Regular, Zero, or Mini Spangle |
| Surface Treatment | Chromated, Anti-fingerprint, Oiled or Dry |
| Production Standards | ASTM A792, EN 10346, AS 1397 |
AZ Series Galvalume Steel Coils – From Light to Heavy Coating Options
Explore AZ30 to AZ275 Coils for Ceilings, Roofing, Wall Panels, and Outdoor Structures with Reliable Corrosion Resistance
AZ30 (30 g/m²)
AZ30 Galvalume steel coil has a light coating, offering basic corrosion resistance. It is suitable for ceilings, indoor panels, and other light construction uses.
AZ50 (50 g/m²)
AZ50 Galvalume steel coil provides stronger durability with moderate coating. It is widely used in roofing sheets, wall panels, and general construction projects.
AZ70 (70 g/m²)
AZ70 Galvalume steel coil ensures stable resistance against rust. It is ideal for roofing, siding, cladding panels, and other exterior building applications.
AZ100 (100 g/m²)
AZ100 Galvalume steel coil delivers balanced performance for diverse needs. It is commonly applied in industrial roofing, garage doors, and outdoor structures.
AZ150 (150 g/m²)
AZ150 Galvalume steel coil extends service life under outdoor conditions. It is suitable for roofing sheets, wall cladding, and exposed structural applications.
AZ185 (185 g/m²)
AZ185 Galvalume steel coil provides high durability for harsh climates. It is often chosen for coastal regions, humid areas, and long-lasting outdoor construction.
AZ200 (200 g/m²)
AZ200 Galvalume steel coil ensures strong resistance in tough environments. It is widely used for industrial roofing, siding systems, and exposed outdoor projects.
AZ275 (275 g/m²)
AZ275 Galvalume steel coil delivers maximum corrosion protection. It is recommended for extreme climates, heavy industries, outdoor storage, and large structures.
Acrylic Coating (Optional )
Acrylic-coated galvalume steel features a thin, transparent acrylic layer applied to the surface to protect against fingerprints during handling, forming, and installation. This coating is non-paintable and designed for exposed applications only.
It allows for dry roll forming without lubrication and enables smooth processing on roll forming machines without frequent cleaning of the tooling. This makes it ideal for efficient, clean, and consistent production.
Acrylic Coating (Optional )
At Hengze Steel, we primarily supply Galvalume steel coils with coating weights of AZ150, AZ165, and AZ50 equivalent. These designations represent high-performance aluminum-zinc alloy coatings designed to deliver outstanding corrosion resistance and durability.
AZ150 (150 g/m²) complies with EN 10346 standards
AZ165 (165 g/m²) corresponds to AZ55 under ASTM A792
AZ150 is functionally equivalent to AZ50 under ASTM A792 (≈150 g/m²)
These coatings consist of approximately 55% aluminum, 45% zinc, offering superior performance over traditional galvanized coatings in long-term exposure environments.
We also offer customized lower AZ coating weights based on specific project or cost requirements.
Applications and Recommended Specifications
Building & Roofing Systems
Widely used for roofing, wall panels, and facades in commercial and industrial buildings. Offers long-lasting corrosion resistance, thermal reflectivity, and modern appearance ideal for architecture.
Machinery & Automotive Parts
Applied in vehicle body panels, mufflers, and mechanical housings. Combines structural strength, high-temperature resistance, and superior surface quality for reliable industrial applications.
Appliances & HVAC Equipment
Ideal for refrigerator backs, lighting fixtures, and HVAC ductwork. Ensures stable performance under heat and humidity with excellent coating adhesion and anti-corrosion properties.
Agricultural & Storage Facilities
Perfect for silos, barns, greenhouse frames, and outdoor sheds. Provides weather durability and long service life, making it a cost-effective choice for agricultural and storage environments.
| Grade | Type | Yield Strength | Applications |
|---|---|---|---|
| CS-A / B / C | Commercial Steel | ≤ 280 MPa (40 ksi) | General forming, roll forming |
| FS-A / B | Forming Steel | ≤ 260 MPa (38 ksi) | Deep drawing, press forming |
| SS Grade 33 | Structural Steel | ≥ 230 MPa (33 ksi) | Light framing, construction profiles |
| SS Grade 50 | High-Strength Steel | ≥ 345 MPa (50 ksi) | Purlins, joists, structural framing |
| SS Grade 80 | Ultra-High Strength | ≥ 550 MPa (80 ksi) | Heavy-duty components |
| Type 2 | Enhanced Coating Type | – | High-corrosion resistance, outdoor use |
| Grade | Type | Yield Strength | Applications |
|---|---|---|---|
| SGLCC | Commercial Quality | ≤ 270 MPa | General use, simple forming |
| SGLCD | Drawing Quality | ≤ 260 MPa | Moderate drawing, home appliances |
| SGLCE | Deep Drawing Quality | ≤ 240 MPa | Complex forming, stamped parts |
| SGLC400 | Structural Steel Grade | ≥ 400 MPa | Roofing, wall systems, light framing |
| SGLC440/490+ | High Strength Structural | ≥ 440–590 MPa | Structural profiles, industrial cladding |
| Grade | Type | Yield Strength | Applications |
|---|---|---|---|
| DX51D+AZ | Commercial Drawing Grade | ≥ 140 MPa | Roofing, wall panels, HVAC systems |
| DX52D+AZ | Improved Drawing Grade | ≥ 140 MPa | Stamping, formed parts |
| S220GD+AZ | Structural Steel Grade | ≥ 220 MPa | Purlins, support structures |
| S350GD+AZ | High Strength Structural | ≥ 350 MPa | Industrial siding, frames |
| S550GD+AZ | Ultra-High Strength | ≥ 550 MPa | Load-bearing parts, high-strength framing |
Why Choose Hengze Galvalume Steel Coils?
Outstanding Corrosion Resistance
Hengze Galvalume steel coils feature a 55% aluminum, 43.5% zinc, and 1.5% silicon alloy coating (AZ30–AZ275), offering up to four times the corrosion resistance of standard galvanized steel.
Superior Heat Reflectivity
The aluminum-rich surface reflects heat and UV rays, making Galvalume ideal for roofing and cladding in high-temperature or sunny environments.
Clean Surface & Long-Lasting Appearance
With a smooth, uniform spangle finish, Galvalume provides a modern, metallic look that stays clean and visually appealing over time.
Excellent Formability & Edge Protection
Galvalume coils are easy to form, cut, and weld. The coating resists edge corrosion with a natural self-healing effect, extending the product’s lifespan.
Certified Quality You Can Trust
Manufactured to ASTM A792, EN 10346, and AS 1397 standards, Hengze coils are SGS-certified and available with long-term warranties upon request.
Frequently Asked Questions
The price of Galvalume Steel Coil varies depending on the coating weight (AZ50, AZ150, etc.), base steel grade, thickness, and market conditions. As of now, global prices typically range from $700 to $1,000 per metric ton (FOB). Please contact Hengze Steel directly for an updated quotation tailored to your specification and destination.
Galvalume Steel Coil offers superior corrosion resistance, high heat reflectivity, and excellent formability due to its aluminum-zinc alloy coating (typically 55% Al, 43.4% Zn, and 1.6% Si). It lasts 2–6 times longer than traditional galvanized steel in outdoor environments, making it ideal for roofing, wall panels, and structural components.
Galvalume coils are widely used in:
Architectural roofing and cladding
Pre-engineered buildings (PEB)
Automotive parts
Appliances and HVAC ducts
Agricultural sheds and silos
Its durability and anti-rust characteristics make it a trusted material for both residential and industrial applications.
Galvalume has an aluminum-zinc alloy coating, whereas galvanized steel uses a pure zinc coating. Galvalume offers better corrosion resistance, especially in marine and high-moisture areas, and has a longer lifespan. However, galvanized steel may perform better in cut-edge protection and high-impact applications.
Hengze’s Galvalume Steel Coils comply with:
ASTM A792 (AZ50, AZ55)
JIS G3321 (SGLCC, SGLC400)
EN 10346 (DX51D+AZ, S550GD+AZ)
These standards ensure coating weight accuracy, mechanical performance, and product reliability across different markets.
Get a Quote Today
At Hengze Steel, we specialize in supplying premium Galvalume Steel Coils engineered for superior corrosion resistance, thermal reflectivity, and long-lasting structural performance.
Whether you’re looking for tailored specifications, competitive pricing, or technical guidance, our expert team is here to support you throughout your sourcing and project planning process.
👉 Or email us at sales@hengzesteel.com.
Recommended Steel Coil Products
Galvanized Steel Coil (GI)
Zinc-coated steel coil with strong corrosion resistance and durability, commonly used in construction, automotive parts, and household appliances.
Prepainted Galvalume Steel Coil (PPGI)
Combines color coating and aluminum-zinc base to ensure outstanding weather resistance, longevity, and color retention in outdoor applications.
Prepainted Galvanized Coils (PPGL)
Color-coated GI coil with excellent rust protection and aesthetic finish, ideal for roofing, siding, home appliances, and light industrial applications.
Zn-Al-Mg Coated Steel Coil
High-performance coated steel with superior corrosion resistance, especially at edges and scratches, ideal for construction and harsh...
