3003 H26 Corrugated Aluminium Sheet For Roofing

 

The 3003 H26 corrugated aluminium sheet is one of our best-selling products. It offers a perfect balance of strength, formability, and weather resistance

 

Advantages of 3003 H26 corrugated aluminum sheet as a roofing material

 

• Better Corrosion Resistance than Galvanized Steel: Unlike galvanized steel that rusts when the zinc layer scratches, 3003 aluminum has natural rust resistance. It contains manganese, which significantly improves its ability to withstand rain, moisture, and mild industrial chemicals.
• H26 Temper Means Higher Strength: Standard roofing often uses H14 (half hard) or H24 temper. The H26 temper (3/4 hard) provides higher tensile and yield strength. This means the roof can handle heavier snow loads, wind pressure, and maintenance foot traffic without bending easily.
• Lightweight to Reduce Structure Load: Aluminum is only 1/3 the weight of steel. This significantly reduces the dead load on building frames, saving costs on structural steel supports and making on-site installation much faster.
• Excellent Formability: Despite its higher strength, 3003 H26 can be easily roll-formed into various corrugated and trapezoidal profiles without cracking at the bending edges.
• High Scrap Value: Even after 20 years of use, aluminum panels have a very high recycling value, lowering the total lifecycle cost of the building.

 

 

Applications Of 3003 H26 Corrugated Aluminum Sheet

 

The 3003 H26 corrugated aluminium sheet is highly versatile. We regularly supply these panels for the following practical applications:

 

• Industrial Buildings: Factory roofs, warehouses, and logistics parks. The material handles industrial emissions well and requires almost no maintenance.
• Residential Roofing: Canopies, house roofs, and garages. Color-coated aluminum panels provide a modern look while keeping the house cool by reflecting solar heat.
• Agricultural Structures: Poultry farms, barns, and greenhouses. The material resists the highly corrosive ammonia gases present in animal farming environments.
• Coastal & Humid Environments: Seaside resorts, port storage facilities, and island buildings where high humidity and salt air destroy standard steel roofs quickly.
• Temporary Buildings: Construction site enclosures and temporary shelters, easily installed and removed.

 

 

Mechanical Properties of 3003 aluminum

 

Property	Standard Value
Alloy Grade	3003 (Al-Mn Alloy)
Temper	H26 (Strain hardened, 3/4 hard)
Tensile Strength (Rm)	140 – 180 MPa
Yield Strength (Rp0.2)	≥ 115 MPa
Elongation (A50mm)	≥ 3%
Density	2.73 g/cm³
Thermal Conductivity	High (Good for heat dissipation)
Corrosion Resistance	Excellent

 

Corrugated Profile & Dimensions of 3003 H26 Aluminum Roofing Sheet

 

We offer various roll-forming molds to meet local market standards. The structure of the wave directly affects the water drainage and load-bearing capacity of the roof.

 

• Wave Types: Standard Circular Corrugated, Trapezoidal (Box profile), Ribbed panels, and Standing Seam profiles.
• Pitch (Wave Distance): Common sizes include 65mm, 76mm, and 125mm.
• Depth (Wave Height): Common sizes include 14mm, 18mm, 25mm, and 35mm.
• Effective Width: After overlapping, the actual coverage width (e.g., a 1000mm feeding width sheet might have an effective width of 840mm or 900mm).

 

At GNEE, we manufacture exactly what you need. We do not just sell standard stock; we provide customized B2B solutions.

Item	Available Custom Range
Thickness	0.3 mm – 6 mm (Popular: 0.5mm, 0.7mm, 0.8mm)
Feeding Width	600 mm – 3000 mm (Popular: 1000mm, 1200mm, 1220mm)
Length	As per request (Usually cut to fit 20ft or 40ft containers, e.g., 5.8m or 11.8m)
Color	Any RAL System color or custom color sample matching
Coating Type	PE, PVDF, Epoxy (Primer)
Profile	Standard wave, Trapezoidal, or Custom drawing

 

We support OEM profiles. 

 

 

Surface & Coating Options of 3003 H26 Aluminum Roofing Sheet

 

The surface coating decides the lifespan and visual appeal of the roofing sheet. GNEE offers three main surface options:

1. Mill Finish (No Coating)

Features: Raw aluminum color, silver metallic look.

Pros: Lowest cost, fast production. Good natural oxidation layer protects the metal.

Uses: Basic industrial roofing, concealed roofing layers, agricultural buildings.

 

2. PE (Polyester) Coating

Features: Color coated with polyester paint.

Pros: Cost-effective, rich color choices, good adhesion. Lasts about 8-10 years outdoors before obvious color fading.

Uses: Residential roofing, indoor cladding, wall panels, and short-term outdoor projects.

 

3. PVDF (Fluorocarbon) Coating – Highly Recommended

Features: Premium coating with excellent UV resistance and weatherability.

Pros: Resists chalking, fading, and chemical peeling. Offers a 15–25 years outdoor lifespan even under strong sun.

Uses: High-end commercial buildings, severe coastal areas, heavily polluted industrial zones.

 

Professional Production Process of 3003 H26 Corrugated Aluminum Roofing

 

We ensure product quality from the raw aluminum ingot to the final shaped panel. Understanding our process helps you trust our stable quality:

• Hot Rolling / Cold Rolling: Aluminum ingots are processed into aluminum coils with precise thickness control.
• Annealing: The coils are heated in an annealing furnace to achieve the specific H26 temper, balancing hardness and bending ability.
• Color Coating (Optional): If required, the aluminum coil goes through our high-speed continuous coating line (cleaning, primer, baking, topcoat, baking).
• Corrugation (Roll Forming): The flat coil or sheet is fed into the roll-forming machine and pressed into the corrugated profile.
• Cutting: An automated flying shear cuts the sheets to your exact requested length with zero tolerance errors.

 

 

GNEE is a professional aluminum supplier based in China, dedicated to providing high-quality metal solutions for global buyers.

• Rich Experience: 18+ years of manufacturing and exporting experience in the aluminum industry.
• Global Reach: We have successfully exported to 100+ countries, including markets in Southeast Asia, the Middle East, Africa, South America, and Europe.
• Certifications: Our factory operates under ISO 9001 quality management systems. Our products have passed SGS and BV testing.
• Reliability: We are a long-term supplier for major construction, roofing, and infrastructure projects worldwide. We offer stable supply capacity and fast delivery times.

 

Quality Inspection System

 

To lower your purchasing risk, GNEE implements strict quality control before shipping. We conduct the following tests:

• Chemical Composition Analysis: Ensuring the manganese content meets 3003 alloy standards.
• Mechanical Properties Testing: Checking tensile strength and yield strength to confirm H26 temper.
• Thickness & Tolerance Inspection: Micrometer checks to ensure thickness is within standard tolerance (no extreme negative tolerance).
• Surface Quality Inspection: Checking for scratches, oil spots, or coating defects. T-bend testing for coated sheets to ensure paint does not peel.
• Flatness & Profile Accuracy: Measuring the wave pitch and depth to ensure panels will overlap perfectly during installation.

Note: A standard Mill Test Certificate (MTC) is provided with each delivered order. Third-party inspections (like SGS or BV) are warmly welcomed.

 

 

 

Safe Packaging & Shipping

We understand that international shipping can be rough. A good product is useless if it arrives damaged. GNEE uses heavy-duty, seaworthy export packaging to ensure the safety of your goods.

 

• Standard Packaging Method:

1. Sheets are stacked on strong seaworthy wooden pallets.
2. Wrapped completely in waterproof kraft paper to block moisture.
3. Covered with heavy-duty PE film for double water resistance.
4. Hard cardboard or steel edge protectors are placed on all corners to prevent bending during lifting.
5. Tied down securely with galvanized steel strips.

 

• Shipping & Loading: We calculate the exact container loading plan to maximize space and save your sea freight costs. We use wood blocks and steel wires inside the container to prevent sliding during ocean transit.
• Moisture Control: Desiccants are placed inside the package to prevent "white rust" (oxidation) caused by ocean humidity.

 

 

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