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China Aluminum Roofing Sheet Suppliers - Factory Direct Corrugated Aluminium Sheets with Exceptional Durability
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 Size: 1000mm×2000mm, 1220mm×2440mm, 1250mm×3000mm | 1060, 3003, 5052 | Batch construction of residential and commercial buildings | Size deviation ≤±5mm, flat surface without waves |
| Custom Size: 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 |
Detail Images
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Frequently Asked Questions
Q
What thickness of aluminum roofing sheet is best for residential buildings?
A
For most residential roofing applications, a medium thickness of 0.5mm – 0.8mm using alloys such as 3003 or 5052 is recommended. This range provides a good balance between structural strength, weight, and cost-effectiveness, making it suitable for residential roofs, commercial buildings, and agricultural greenhouses.
Q
Which aluminum alloy series offers the best corrosion resistance for coastal environments?
A
The 5xxx Series (5052 and 5083) provides superior corrosion resistance and high tensile strength, making it the ideal choice for coastal buildings, industrial workshops, and high-wind areas. The Al-Mg and Al-Mg-Mn compositions significantly enhance resistance to saltwater and humid conditions.
Q
What is the difference between PVDF coated and polyester coated aluminum roofing sheets?
A
PVDF (Polyvinylidene Fluoride) coated sheets offer a coating thickness of 20–30μm with weather resistance of ≥20 years, making them ideal for coastal, high-end commercial, and industrial applications. Polyester coated sheets have a coating thickness of 15–25μm with weather resistance of ≥10 years, which is more cost-effective for residential and inland commercial use.
Q
Can aluminum roofing sheets be customized in size?
A
Yes. In addition to standard sizes such as 1000mm×2000mm, 1220mm×2440mm, and 1250mm×3000mm, custom sizes are available with widths ranging 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?
A
Quality control requirements vary by specification. Key standards include: thickness deviation of ≤±0.02mm to ±0.04mm depending on gauge, tensile strength of ≥150MPa for medium thickness, elongation of ≥5% for thick sheets, surface scratch depth of ≤0.01mm, and no pinholes, creases, or surface waves. Coated products must also meet specific coating thickness and durability requirements.
Q
What are anodized or embossed aluminum roofing sheets used for?
A
Anodized and embossed aluminum roofing sheets are primarily used for decorative roofs, awnings, and cultural buildings where aesthetics are a priority. The anodized film thickness ranges from 8–15μm, offering both visual appeal and surface protection. These are commonly made from 1060 and 3003 alloys, and pattern uniformity is a key quality requirement.