Galvalume Flat Sheets are steel panels coated with an aluminum-zinc alloy using a hot-dip process, with a coating composed of 55% Al, 43.5% Zn, and 1.5% Si, offering corrosion and heat resistance and easy processing. Widely used in construction, industry, appliances, and automotive sectors. Wanzhi produces and supplies high-quality aluminum-zinc coated steel in various grades and specifications, including strips, coils, sheets, roofing materials, and profiles with professional global solutions.
Thickness: 0.15-4.0 mm
MQQ: 10 tons
Standard: GB/ ASTM / JIS / EN, etc.
Galvalume Flat Sheets Specification
| Item | Details |
| Coating Composition | 55% Al + 43.5% Zn + 1.5% Si |
| Standard | GB/ ASTM / JIS / EN |
| Thickness | 0.15-4.0 mm |
| Width | ≤1500mm |
| Coating Weight | AZ30 – AZ150 g/m² |
| Surface Treatment | Coated, Passivation, oiled, anti-finger pint |
| Heat Resistance | Up to 315°C |
| Packing | Standard Export Package |
| Serve Life | 20–30 years |
Galvalume Flat Sheets Production Process
The production of Galvalume Flat Sheets involves several key steps, including cleaning, hot-dip coating, cooling, and cutting, etc.
- Substrate Preparation: High-quality cold-rolled or hot-rolled steel is selected as the substrate.
- Cleaning and Annealing: Oil, rust, and scale are removed, and the steel is annealed to improve ductility and coating adhesion.
- Hot-Dip Aluminum-Zinc Coating: A continuous hot-dip process evenly applies an aluminum-zinc alloy to the steel surface, forming a dense protective layer.
- Cooling and Flattening: The sheets are rapidly cooled after coating and then flattened through rolling to ensure a smooth surface and precise dimensions.
- Surface Treatment and Post-Processing: Depending on the intended application, additional surface treatments such as painting or coating may be applied.
Galvalume Sheet Finished Products
Galvalume sheets can be processed into various building materials and appliances through multiple techniques such as profiling, color coating, lamination, bending, and stamping. They are corrosion-resistant, durable, and easy to shape.
- Alu-zinc Corrugated Sheets: Formed into wave or trapezoidal panels for roofing, siding and fences.
- Color-Coated Galvalume Sheets (PPGL): A color coating is applied to the aluzinc substrate, available in various RAL colors, suitable for architectural decoration and exterior walls.
- Alu-Zinc Sandwich Panels: Insulated sandwich panels laminated from aluminum-zinc alloy sheets and cores such as EPS, rock wool, or polyurethane, used for prefabricated houses and cold storage.
- Anti-fingerprint Panels: Used for home appliance shells such as air conditioners and refrigerators.
- Structural Fittings: Stamped into brackets, gutters, flashing and other construction accessories.
Galvalume Flat Sheets Price
Galvalume Flat Sheets price typically depends on factors such as substrate, coating thickness, and specifications. The cost of galvalume steel is approximately $600 to $1,000 per ton. WanZhi Group optimizes costs through factory direct supply and bulk purchasing, combined with a strict management system and one-stop export services, making us the preferred supplier for global projects and distributors. Please feel free to reach out with your requirements, and we will provide you with the best quotes!
Comparison of GI/ GL /PPGL Sheet
| Item | GI Sheet | GL Sheet | PPGL Sheet |
| Coating Composition | 100%Zinc | 55% Al + 43.5% Zn + 1.5% Si | 55% Al-Zn alloy + organic color coating |
| Coating Weight | Z30 – Z275 g/m² | AZ30 – AZ150 g/m² | AZ30 – AZ150 g/m² |
| Corrosion Resistance | Good | Excellent (2–6 times of GI) | Outstanding (UV & weather resistant) |
| Heat Resistance | ≤ 120 °C | ≤ 315 °C | ≤ 120 °C |
| Surface | Regular spangle, matte gray | Fine/zero spangle, bright metallic | Custom RAL colors, smooth painted |
| Formability | Good | Excellent | Good |
| Heat Reflectivity | Normal | High | Medium – High |
| Service Life | 8–15 years | 20–30 years | 25–35 years |
| Pricc | Low | Medium | Medium-high |
Advantages and Usages of Galvalume Flat Sheets
Advantages
- Corrosion Resistance: The aluminum-zinc alloy provides dual protection, preventing rust even if the surface is damaged, which reduces maintenance frequency and costs.
- High-Temperature Resistance: The aluminum layer has a high melting point, making it suitable for high-temperature environments like roofs and industrial equipment.
- Long Lifespan: Typically lasts over 30 years, lowering maintenance costs.
- Excellent Workability: Can be cut, bent, stamped, and rolled, accommodating various custom needs.
- Aesthetic Appeal: Features a natural silver-gray luster, available in smooth, textured, or colored finishes.
- Lightweight: Lighter than traditional materials, making installation and transportation easier.
- Eco-Friendly: The production and recycling processes are relatively environmentally friendly, meeting modern sustainability requirements.
Usages
- Construction Industry: Roofs, walls, gutters, and downspouts.
- Industrial Manufacturing: Storage tanks, ventilation ducts, and machinery casings.
- Home and Decor: Furniture, kitchen equipment, and wall panels.
- Agricultural Facilities: Greenhouses, fencing, and warehouse structures.
- Energy and Infrastructure: Solar panel supports, electrical equipment, and communication tower panels.
- Electrical Equipment Enclosures: Distribution cabinets, electrical boxes, and charging station enclosures.
- Appliance Manufacturing Panels: Refrigerator backs, air conditioning units, ovens, and water heater housings.
Galvalume Flat Metal Sheets for Sale
WanZhi Group operates two galvanized production lines, three color-coated steel production lines, and one aluminum-magnesium alloy production line. We not only provide manufacturing services for existing designs but also customize material specifications, galvanized sheet shapes, and steel structures based on customer needs. Contact us today, and our account manager will provide you with an accurate quote!
Galvalume Flat Sheets Supplier – WanZhi Group
Since its establishment in 2011, WanZhi Group has been engaged in the export of coated steel sheets. We have obtained international certifications such as ISO, CE, etc, supplying galvanized steel, galvalume steel, and other materials for various projects in over 120 countries. We offer a one-stop service for design, customization, and production to our global clients.
Factory
- WanZhi operates two galvanized steel production lines with zinc coating thicknesses ranging from 30 to 275 grams, achieving an average monthly output of 10,000 tons.
- We ensure a one-stop service that covers everything from raw material procurement and processing to quality inspection and finished product packaging, guaranteeing cost-effective, high-quality products for our customers’ projects.
Packages
Most exported steel coils are packaged according to standard export practices. We also customize packaging based on customer needs, including vertical packaging, plastic film, moisture-proof paper, galvanized iron sheets, and options for company logos.
Certificates
- WanZhi offers factory direct sales with ample raw material inventory and customization services, typically delivering within 5 to 45 days.
- Our products are widely exported to over 120 countries in Asia, Europe, Africa, and Latin America, establishing strong partnerships in key markets such as Kazakhstan, Turkey, the UAE, and Brazil.
- Our galvanized and galvalume products comply with international standards such as ASTM, GB, JIS, and EN.
Laboratory
WanZhi laboratory is equipped with various testing instruments to measure zinc coating thickness, tolerances, tensile strength, yield strength, elongation, hardness, and bending tests, ensuring product quality and precision.
Global Cases
Wanzhi Steel – Agricultural Greenhouse Project in Turkmenistan
550 tons PPGI Steel Coil to Azerbaijan
100 tons of Galvanized Coils to Saudi Arabia
144 ton Steel Wire to Spanish
Project of PPGI Roofing en Libya
100 tons of GL and PPGL in Solomon Islands
Customer Feedback
Wanzhi provides professional design and production solutions and has received positive feedback from customers worldwide.
Wanzhi Group offers various types and grades of aluminum-zinc coated sheets and coils, as well as customizable metal roofing sheets and corrugated sheets. We are here to provide you with tailored project solutions, so please feel free to reach out for inquiries.