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Welcome to Hemaokang Steel (Shandong) Co., Ltd., a trusted manufacturer and exporter of high-quality building materials with ISO9001 certification. Our Fireproof Class B Rated PU Metal Wall Panel External Waterproof Thermal Insulation is engineered to meet the rigorous demands of modern construction. Combining a robust metal skin with a rigid polyurethane foam core, this panel delivers unmatched fire resistance, thermal efficiency, and waterproofing, making it the ideal choice for exterior walls in commercial, industrial, and residential projects worldwide. With an annual export value of US$50 million to over 15 markets across North America, Europe, Asia, and Africa, we pride ourselves on delivering reliable, cost-effective solutions that enhance building performance and safety.
This panel system is designed to provide superior insulation and structural integrity while meeting the stringent Class B fire safety standard. Whether you are constructing a cold storage facility, a warehouse, an office building, or a residential complex, our PU metal wall panels offer a seamless combination of protection and energy savings. Let us walk you through the key features and benefits that set this product apart.
Key Features and Technical Specifications
- Fireproof Class B Rating: Our PU foam core is formulated with special flame retardants, achieving a Class B fire rating according to EN 13501-1 and GB 8624 standards. This means it contributes to fire safety by limiting flame spread and reducing smoke production – critical for building code compliance.
- Exceptional Thermal Insulation: With a thermal conductivity as low as 0.022 W/m·K, the closed-cell polyurethane foam minimizes heat transfer. This results in significant energy savings for heating and cooling, lowering operational costs year-round.
- 100% Waterproof: The continuous foaming process creates a seamless, closed-cell structure that prevents water absorption. Combined with the metal facings and interlocking joints, the panel forms a complete waterproof barrier against rain, snow, and humidity.
- High Strength-to-Weight Ratio: The steel facings (galvanized, color-coated, or aluminum) provide excellent impact resistance and load-bearing capacity. Despite its strength, the panel is lightweight, reducing foundation and structural support costs.
- Easy and Fast Installation: Panels are manufactured with tongue-and-groove or overlapping joint systems, allowing for rapid assembly on-site. No heavy equipment is required, and the modular design reduces labor time and installation errors.
- Durable and Long-Lasting: The metal outer layer is corrosion-resistant and can be coated with PVDF or polyester paint for enhanced weather resistance. The PU core remains stable over decades, ensuring consistent performance.
- Eco-Friendly: Polyurethane is a CFC-free and HCFC-free insulation material. Panels can be recycled at end of life, contributing to green building certifications such as LEED.
| Parameter | Standard Value | Remark |
|---|---|---|
| Panel Thickness | 50 / 75 / 100 / 150 / 200 mm | Custom thickness available upon request |
| Effective Width | 1000 mm / 1150 mm | Other widths customizable (min. 900 mm) |
| Maximum Length | 12,000 mm | Longer lengths possible with special logistics |
| Core Density | 38 – 45 kg/m³ (standard) | Higher density available for enhanced strength |
| Fire Rating | Class B (B-s1,d0) according to EN 13501-1 | Also meets GB 8624 B1 |
| Thermal Conductivity λ | 0.022 – 0.028 W/m·K | Depending on density |
| Water Vapor Resistance | ≥ 20,000 m²·h·Pa/g | Excellent moisture barrier |
Detailed Benefits for Your Construction Project
- Energy Efficiency: By reducing thermal bridging and providing continuous insulation, our panels can cut heating and cooling energy consumption by up to 40% compared to traditional materials. This translates into lower utility bills and a smaller carbon footprint.
- Fire Safety Compliance: With the Class B rating, building owners and contractors can confidently meet international fire codes. The panel does not drip burning particles, and its low smoke generation improves evacuation safety.
- Moisture Protection: The closed-cell foam and sealed joints prevent mold, mildew, and rot caused by moisture ingress. This extends the lifespan of the building envelope and improves indoor air quality.
- Structural Economy: Lightweight panels reduce dead loads, allowing for lighter steel structures and smaller foundations. This can lower overall construction costs by 10-15%.
- Design Flexibility: Available in a wide range of colors (custom RAL) and finishes (smooth, embossed, or stone coating), the panels can match any architectural style. They can also be cut to precise dimensions for curved or angled walls.
- Low Maintenance: The metal surface is easy to clean and resistant to UV degradation, so the panels retain their appearance for decades without repainting.
Why Choose Hemaokang Steel? Our company, established in 2025, has quickly become a leading exporter in the steel building materials industry, with an annual export value reaching US$50–100 million. We employ a team of 51–100 dedicated professionals, all committed to quality control and customer satisfaction. Our factory is ISO9001 certified, ensuring every panel undergoes rigorous testing for fire resistance, thermal performance, and dimensional accuracy. We have successfully supplied products to diverse markets including North America, South America, Europe, the Middle East, Southeast Asia, Africa, Oceania, and more. This global footprint proves the reliability and acceptance of our products under various climatic and regulatory conditions.
We understand that each project is unique. That is why we offer customizable panel dimensions, special core densities, and additional coatings (like anti-corrosion or anti-graffiti) upon request. Our technical team is ready to provide you with load calculations, U-value simulations, and installation drawings tailored to your needs. We also offer sample panels for testing before bulk orders.
Ready to upgrade your building envelope? Contact Hemaokang Steel (Shandong) Co., Ltd. today. With our competitive pricing, fast lead times (15-25 days), and dedicated after-sales support, we are your ideal partner for high-performance external wall insulation. Request a quote or a technical consultation – we look forward to serving you.
Frequently Asked Questions (FAQ)
-
Q: What does Class B fire rating mean for this panel?
A: Class B (B-s1,d0) according to EN 13501-1 indicates that the material has limited contribution to fire growth, very limited smoke production (s1), and no flaming droplets/particles (d0). It is suitable for use in buildings with moderate fire safety requirements, such as commercial and industrial exterior walls. -
Q: Can the PU wall panel be used in cold climates?
A: Absolutely. The low thermal conductivity (0.022-0.028 W/m·K) makes it an excellent insulator for cold storage, freezers, and buildings in frigid zones. The closed-cell structure prevents moisture ingress and maintains insulation performance even at sub-zero temperatures. -
Q: How is the panel installed on an exterior wall?
A: Panels are typically fixed to a steel or concrete substructure using self-drilling screws. The interlocking joints (tongue-and-groove or overlap) ensure a tight seal. For waterproofing, sealant is applied at joints and flashings. Detailed installation manuals and technical support are provided with each order. -
Q: Is this panel suitable for use as a roof panel as well?
A: While primarily designed for external walls, our PU metal panels can also be used for roofing with proper slope and flashing design. However, we recommend using our dedicated roof panel series (with standing seam profiles) for best waterproof performance. -
Q: What is the typical lead time and shipping method?
A: Lead time is usually 15-25 working days after order confirmation and deposit. We ship via sea freight in containers (20' or 40' HC) to major ports worldwide. Air freight is available for urgent small orders. -
Q: Do you offer samples for testing?
A: Yes, we can provide small samples (300mm x 300mm) for fire and thermal tests. Please contact our sales team to discuss sample cost and shipping. Sample preparation takes 3-5 days. -
Q: Is the recycled content available? Can the panel contribute to LEED points?
A: The metal facings contain recycled steel (up to 30% post-consumer content). The PU foam is CFC-free and can be recycled into new products. This contributes to LEED credits in Materials & Resources and Energy & Atmosphere categories. -
Q: What warranty do you offer?
A: We provide a standard 5-year warranty against manufacturing defects, including delamination, corrosion penetration, and excessive color fading. Extended warranties (up to 10 years) are negotiable for larger projects.
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