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Help CenterAluminum Metal Sandwich Panel 4mm Skin 3003 Alloy for Exterior Wall Weatherproof Building Material
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Welcome to Hemaokang Steel (Shandong) Co., Ltd. – a trusted supplier established in 2025 with an annual export value of US$50 million to US$100 million and a dedicated team of 51–100 professionals. We are proud to introduce our Aluminum Metal Sandwich Panel 4mm Skin 3003 Alloy, specifically engineered for exterior wall applications where weatherproof performance and durability are paramount. Manufactured under strict ISO9001 quality management systems, this panel combines lightweight construction with exceptional strength, making it an ideal choice for modern architectural facades, commercial buildings, and industrial projects. Its advanced design ensures long-term resistance to rain, wind, UV radiation, and temperature extremes, delivering both aesthetic appeal and structural integrity.
Our panels feature a 4mm thick aluminum skin made of high-grade 3003 alloy, known for its excellent corrosion resistance, formability, and weldability. The core material can be selected from polyethylene (PE) for standard thermal insulation or fire-resistant A2 core for enhanced safety compliance. The surface is coated with premium PVDF or PE finishes, available in a wide range of RAL colors, to meet diverse architectural design requirements. With customizable dimensions (width up to 1500mm, length up to 6000mm), these panels suit both new construction and renovation projects.
Key Features & Technical Specifications
- Premium Alloy 3003: Provides superior corrosion resistance and mechanical strength, ideal for harsh outdoor environments.
- 4mm Skin Thickness: Offers enhanced rigidity and impact resistance compared to standard 2mm or 3mm skins.
- Weatherproof Construction: Multi-layer coating and sealed edges prevent water ingress, UV degradation, and color fading.
- Fire Safety Options: Choose PE core (Class B) or A2 fireproof core (Class A2) to meet local building codes.
- Lightweight & Easy to Install: Reduces structural load and speeds up installation, lowering labor costs.
- Customizable: Width, length, color, coating, and core material can be tailored to project specifications.
- Low Maintenance: Non-porous surface resists dirt and stains; easy to clean with water.
- Thermal & Acoustic Insulation: Core material provides effective insulation, reducing energy consumption and noise.
| Parameter | Value / Range |
|---|---|
| Alloy Grade | 3003 (H14/H24 temper) |
| Skin Thickness | 4mm (0.157 inch) |
| Core Material | PE (standard) or A2 fireproof (optional) |
| Total Panel Thickness | 6mm – 50mm (customizable) |
| Width | 1000mm, 1250mm, 1500mm (custom up to 2000mm) |
| Length | Up to 6000mm (custom) |
| Surface Coating | PVDF (70% or 30% resin) or Polyester (PE) |
| Fire Rating | Class A2 (with fireproof core) / Class B (PE core) |
| Weight (approx.) | 5.5 – 8.0 kg/m² (depending on core and thickness) |
| Warranty | Up to 15 years for coating (upon request) |
Why Choose Our 4mm Skin 3003 Alloy Sandwich Panel?
- Superior Weather Resistance: The 4mm thick aluminum skin, combined with high-quality PVDF coating, withstands extreme weather conditions including heavy rain, snow, UV radiation, and temperature fluctuations. Colors remain vibrant for decades.
- Enhanced Structural Integrity: 3003 alloy offers excellent tensile strength and fatigue resistance, ensuring the panel remains flat and rigid even under wind loads typical for high-rise buildings.
- Fire Safety Compliance: With optional A2 fireproof core, the panel meets international fire safety standards (e.g., EN 13501-1). This is critical for building projects requiring non-combustible materials.
- Energy Efficiency: The core insulation reduces heat transfer, contributing to lower HVAC costs and improved indoor comfort. A typical 20mm PE core provides R-value equivalent to 0.5–0.7 m²·K/W.
- Cost-Effective Installation: Lightweight panels (approx. 5.5–8.0 kg/m²) require less heavy lifting equipment and fewer workers, reducing total project time and costs.
- Versatile Aesthetics: Available in hundreds of RAL colors, metallic finishes, and custom textures (e.g., stucco, wood grain) to match any architectural style.
Trusted by global markets – Hemaokang Steel has supplied premium building materials to North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and the domestic Chinese market. Our ISO9001 certification ensures consistent quality from raw material procurement to final packaging. With an annual export value exceeding US$50 million, we have the capacity to fulfill large-scale orders while maintaining strict quality control. Each panel is inspected for thickness, flatness, coating adhesion, and color consistency before shipment.
We invite you to partner with Hemaokang Steel. Whether you need a sample kit, technical data sheet, or a custom quotation for your next project, our experienced team is ready to assist. Contact us today to discuss your requirements and experience the reliability of our 4mm skin 3003 alloy sandwich panels. Your satisfaction is our priority, and we are committed to delivering products that exceed expectations.
Frequently Asked Questions (FAQ)
Q1: What is the difference between 3003 and 1100 aluminum alloy for sandwich panels?
A: 3003 alloy contains manganese, which provides higher strength and better corrosion resistance compared to 1100 (pure aluminum). It is the preferred choice for exterior wall panels exposed to harsh weather, while 1100 is softer and more suitable for interior applications or decorative purposes.
Q2: Can you provide a fireproof core option that meets building codes?
A: Yes, we offer an A2 fireproof core (mineral-filled) that complies with European standard EN 13501-1 Class A2. This core does not contribute to fire spread and is ideal for high-rise buildings, hospitals, and schools. Please specify your requirement when ordering.
Q3: What is the maximum width and length you can produce?
A: Standard widths are 1000mm, 1250mm, and 1500mm. Custom widths up to 2000mm are possible. Length can be up to 6000mm, or longer upon request depending on transportation and handling. We recommend consulting with our sales team for oversized panels.
Q4: How long does the PVDF coating warranty last?
A: Our PVDF coating (70% resin) comes with a standard warranty of 10 years, and options for up to 15 years are available. The warranty covers chalking, fading, and peeling under normal outdoor conditions. Polyester (PE) coating typically has a 5-year warranty.
Q5: Are these panels suitable for regions with high humidity or coastal environments?
A: Absolutely. The 3003 aluminum alloy, combined with PVDF coating, offers excellent resistance to salt spray and humidity. We recommend the A2 fireproof core for coastal areas because it is non-organic and not affected by moisture. Many of our clients in Southeast Asia and the Middle East use these panels successfully.
Q6: Can you match custom colors or provide color samples?
A: Yes, we can match any RAL, NCS, or Pantone color. We provide color sample cards (A4 size) free of charge for evaluation. For large orders, a pre-production sample can be manufactured to confirm color and finish.
Q7: What is the typical lead time for an order of 5,000 square meters?
A: For standard panels (PE core, common colors), lead time is approximately 15–20 working days. For custom colors or A2 core, it may extend to 25–30 working days. We advise placing orders as early as possible to ensure production slots.
Q8: How do you ensure quality during production?
A: Our factory is ISO9001 certified. Every batch undergoes raw material inspection, in-process checks (skin thickness, core density, coating thickness), and final inspection including flatness, adhesion, and color consistency. We also provide a mill test certificate with each shipment upon request.
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