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China Aluminum Roofing Sheet Suppliers - High-Quality Corrugated Aluminum Sheet from Factory
Key Specifications
Aluminum roofing sheet specifications are customized based on application scenarios, climate conditions, and structural requirements. The main specifications are shown in the following table:
| Specification Category | Detailed Parameters | Typical Alloys | Typical Applications | Quality Control Requirements |
| Thickness | Thin: 0.2mm – 0.5mm | 1060, 3003 | Residential awnings, small sheds, temporary buildings | Thickness deviation ≤±0.02mm, no pinholes |
| Medium: 0.5mm – 0.8mm | 3003, 5052 | Residential roofs, commercial buildings (shops, offices), agricultural greenhouses | Thickness deviation ≤±0.03mm, tensile strength ≥150MPa | |
| Thick: 0.8mm – 1.2mm | 5052, 5083 | Industrial workshops, large-span buildings, coastal area roofs | Thickness deviation ≤±0.04mm, elongation ≥5% | |
| Surface Treatment | PVDF Coated | 3003, 5052 | Coastal buildings, high-end commercial buildings, industrial areas | Coating thickness 20–30μm, weather resistance ≥20 years |
| Polyester Coated | 1060, 3003 | Residential roofs, inland commercial buildings | Coating thickness 15–25μm, weather resistance ≥10 years | |
| Anodized / Embossed | 1060, 3003 | Decorative roofs, awnings, cultural buildings | Anodized film thickness 8–15μm, pattern uniformity | |
| Size (Width × Length) | Standard: 1000×2000mm, 1220×2440mm, 1250×3000mm | 1060, 3003, 5052 | Batch construction of residential and commercial buildings | Size deviation ≤±5mm, flat surface without waves |
| Custom: Width 500–1500mm, Length up to 6000mm | 3003, 5052, 5083 | Special-shaped roofs, large-span industrial buildings | No creases, surface scratch depth ≤0.01mm | |
| Alloy Types | 1xxx Series (1060, 1100) | 1060 (99.6% Al) | Indoor awnings, temporary buildings, decorative roofs | Good corrosion resistance, low strength |
| 3xxx Series (3003) | 3003 (Al-Mn) | Residential roofs, commercial buildings, agricultural greenhouses | Enhanced strength vs. 1xxx, excellent weldability | |
| 5xxx Series (5052, 5083) | 5052 (Al-Mg), 5083 (Al-Mg-Mn) | Coastal buildings, industrial workshops, high-wind areas | Superior corrosion resistance, high tensile strength |
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Frequently Asked Questions (FAQ)
Q
What thickness of aluminum roofing sheet is recommended for residential buildings?
For most residential roofs, a medium thickness of 0.5mm–0.8mm using alloys such as 3003 or 5052 is recommended. This range provides a good balance of structural strength, weather resistance, and cost-effectiveness for homes, shops, and offices.
Q
Which aluminum alloy is best for coastal or high-humidity environments?
The 5xxx series alloys — particularly 5052 (Al-Mg) and 5083 (Al-Mg-Mn) — are best suited for coastal buildings and high-humidity areas. They offer superior corrosion resistance and high tensile strength, making them ideal for marine and industrial environments.
Q
What is the difference between PVDF and Polyester coating for aluminum roofing sheets?
PVDF (Polyvinylidene Fluoride) coating offers superior weather resistance of ≥20 years and is ideal for coastal, industrial, and high-end commercial buildings. Polyester coating provides weather resistance of ≥10 years and is more economical, suited for residential and inland commercial applications.
Q
Can aluminum roofing sheets be customized in size?
Yes. In addition to standard sizes (e.g., 1000×2000mm, 1220×2440mm, 1250×3000mm), custom sizes are available with widths from 500mm to 1500mm and lengths up to 6000mm. Custom sheets are commonly used for special-shaped roofs and large-span industrial buildings.
Q
What quality control standards apply to aluminum roofing sheets?
Quality control requirements vary by specification. Key standards include thickness deviation ≤±0.02mm to ±0.04mm (depending on thickness range), tensile strength ≥150MPa for medium-thickness sheets, surface scratch depth ≤0.01mm for custom sizes, and coating thickness within 15–30μm depending on the surface treatment type.
Q
Is anodized aluminum roofing sheet suitable for decorative applications?
Yes. Anodized and embossed aluminum roofing sheets, typically using 1060 or 3003 alloys, are well-suited for decorative roofs, awnings, and cultural buildings. The anodized film thickness of 8–15μm ensures both aesthetic appeal and uniform pattern consistency.