When constructing a durable and long-lasting carport, selecting the right material is critical. Galvalume steel coil for carport structure has emerged as the preferred choice for manufacturers and contractors worldwide. This aluminum-zinc alloy coated steel offers superior corrosion resistance, heat reflectivity, and structural integrity compared to traditional galvanized options. As a leading galvalume supplier China, we provide AZ150 galvalume and aluzinc steel coil tailored specifically for carport applications. Our material meets ASTM A792 standards, ensuring your carport withstands harsh weather while maintaining aesthetic appeal for decades.
Why Choose Galvalume Steel Coil for Carport Construction?
Carports require materials that balance strength, weight, and longevity. Galvalume steel coil delivers all three through its unique 55% aluminum, 43.4% zinc, and 1.6% silicon coating. This composition provides 2-4 times better corrosion protection than standard galvanized steel, making it ideal for outdoor structures exposed to rain, snow, and UV radiation. The metal roofing coil grade we supply features a spangle-free surface that enhances paint adhesion for color-coated finishes, while the base steel offers high tensile strength for spanning wide column-free areas.
Galvalume Steel Coil For Carport Structure Price Trend (USD/Ton) – Last 12 Months
Data: ChinaCNU Steel Market Research | FOB Tianjin Reference Price
Key Performance Benefits for Carport Structures
- Superior corrosion resistance: The aluminum-rich layer forms a passive oxide barrier, preventing red rust even at cut edges.
- Heat reflectivity: Reduces under-roof temperatures by up to 12°C, protecting vehicles from sun damage.
- Lightweight strength: Achieves high load-bearing capacity at lower gauge thicknesses, reducing steel consumption.
- Formability: Can be roll-formed into trapezoidal, corrugated, or standing seam profiles without cracking.
AZ150 Galvalume: The Optimal Grade for Carport Roofing
Among the various coating classes, AZ150 galvalume represents the industry standard for carport applications. With 150 g/m² total aluminum-zinc coating (both sides), this grade provides excellent protection in moderate to severe environments. Our aluzinc steel coil meets ASTM A792M SS80 Grade 80 requirements, offering minimum yield strength of 550 MPa. This allows engineers to design carports with wider purlin spacing, reducing material and labor costs by up to 15% compared to SS40 grades.
Comparison: Galvalume vs Galvanized Steel for Carports
| Property | Galvalume Steel Coil (AZ150) | Standard Galvanized (Z275) |
|---|---|---|
| Coating composition | 55% Al / 43.4% Zn / 1.6% Si | 99%+ Zinc |
| Corrosion resistance (ASTM B117) | 2,000+ hours to 5% red rust | 500-800 hours to 5% red rust |
| Heat reflectivity | 65-75% solar reflectance | 40-50% solar reflectance |
| Typical yield strength | 550 MPa (SS80) | 280-350 MPa (SS40-SS50) |
| Coating weight | 150 g/m² total | 275 g/m² total |
| Recommended gauge for 6m span | 0.42 mm | 0.55 mm |
| Price per ton (FOB Tianjin) | $780-850 | $680-750 |
| Service life (coastal environment) | 25-30 years | 10-15 years |
Manufacturing Quality: ISO Certified Production
ChinaCNU Steel operates from our Qingdao factory with 15+ years export experience. Our galvalume steel coil for carport structure undergoes rigorous quality checks at every stage. The production line features continuous hot-dip coating with precise air-knife control to maintain uniform coating thickness within ±5 g/m² tolerance. Each coil is tested for coating weight (by X-ray fluorescence), mechanical properties (tensile and yield), and surface quality before release. Our ISO 9001:2026 certification guarantees traceable quality from raw material sourcing to final packaging.
Export Logistics and FOB Pricing
We ship to 80+ countries with reliable FOB pricing from Tianjin Xingang port. Our standard MOQ is 25 tons per specification, though we accommodate trial orders for new customers. Typical lead time is 15-20 working days after deposit, with seaworthy export packing including inner waterproof paper, outer steel sheet, and edge protectors. For carport manufacturers, we offer slitting services to custom widths from 600mm to 1250mm, reducing secondary processing costs.
Application Guide: Selecting the Right Galvalume Coil
For carport structures, we recommend the following specifications based on your project requirements:
- Coating class: AZ150 (standard) or AZ200 (severe coastal areas)
- Thickness range: 0.35mm to 0.60mm for roof panels, 0.60mm to 1.20mm for structural framing
- Width: 900mm to 1250mm for standard corrugated profiles
- Surface treatment: Bare galvalume for natural finish, or pre-painted with PVDF/SMP for color matching
- Certification: ASTM A792M, EN 10346, JIS G3321
Our technical team provides free profile design support, ensuring the aluzinc steel coil you order matches your roll-forming tooling exactly. We also supply matching accessories like ridge caps, flashings, and fasteners from the same batch for consistent color and corrosion performance.
Frequently Asked Questions
1. Can galvalume steel coil be used for both roof and walls of a carport?
Yes, galvalume steel coil is suitable for both roof and wall cladding. For roof applications, we recommend AZ150 or higher coating to handle rain runoff and snow loads. For vertical walls, AZ100 can suffice in sheltered areas. The material can be roll-formed into various profiles like standing seam, corrugated, or flat panels to match architectural designs.
2. How does galvalume compare to aluminum for carport construction?
Galvalume steel offers superior strength-to-weight ratio compared to aluminum. While aluminum weighs about 2.7 g/cm³, galvalume steel is 7.8 g/cm³ but can be used in thinner gauges due to higher strength. Galvalume is also more cost-effective, typically 40-50% cheaper per square meter than aluminum. However, aluminum is more corrosion-resistant in extreme marine environments.
3. What is the minimum order quantity for custom sizes?
Our standard MOQ is 25 tons per specification. For custom widths or thicknesses, we can accommodate smaller orders of 10-15 tons for first-time buyers. We keep stock of popular sizes (0.42mm x 1000mm AZ150) for quick shipment within 7 days.
4. How should galvalume coils be stored before use?
Store coils in a dry, well-ventilated area away from direct rain and ground moisture. Keep the original packaging intact until use. If storing outdoors, cover with a waterproof tarp and ensure the coil is elevated on wooden pallets. Avoid stacking more than three coils high to prevent deformation.
5. Do you provide third-party inspection certificates?
Yes, we offer SGS or BV inspection at the buyer’s cost. Our standard shipment includes mill test certificates with chemical composition, mechanical properties, and coating weight data. All materials are traceable from ladle analysis to final coil number.
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