Product Overview
PU sandwich wall panel is a high-performance insulated panel with a rigid polyurethane (PU/PIR) foam core bonded to two pre-painted steel facings. With thermal conductivity of only 0.021 W/(m·K), it delivers maximum insulation with minimum thickness.
The closed-cell foam is water-resistant and dimensionally stable, making the panel ideal for cold storage, food processing and any building that needs energy-saving envelopes. Panels are light, quick to install and available in any RAL color.
Key Features
- Best-in-class insulation — 0.021 W/(m·K), the lowest k-value among common sandwich cores
- Lightweight — about 10-14 kg/m2, reduces structure load and crane cost
- Water & vapor resistant — closed-cell foam will not absorb water or grow mold
- Any RAL color — white standard; blue, grey, red and custom colors available
- Turnkey solution — 3D layout design and cross-category assembly support included
Application Scenarios
Buyers choose the PU sandwich wall panel for energy-critical buildings:
- Cold storage & freezers — constant temperature with thin walls
- Food & pharma plants — hygienic, washable insulated wall systems
- Prefab & modular buildings — lightweight walls for fast assembly
- Supermarkets & logistics — energy-saving envelope with clean finish
Configuration Options
- Core — polyurethane / PIR rigid foam 36-40 kg/m3
- Facing — 0.4-0.8 mm pre-painted / galvanized steel
- Thickness — 30 / 40 / 50 / 60 / 75 / 80 / 100 / 120 / 150 mm
- Effective width — 950 / 1000 mm
- Coating — PE / HDPE / SMP / PVDF
- Colors — white, grey, blue, red or any RAL color
Product Specifications
| Core density | 36-40 kg/m3 (+/-10%) |
| Thermal conductivity | 0.021 W/(m·K) |
| Steel thickness | 0.4-0.8 mm |
| Effective width | 950 / 1000 mm |
| Panel length | 1-11.8 m, customizable |
| Certificates | CE / ISO 9001 / ASTM / EN 14509 |
All products are manufactured in our ISO 9001 certified factory and carry CE / SGS certification. Custom requirements are welcome.
Quality Certifications
Ruhai Material is ISO 9001 certified and ships products compliant with CE and SGS requirements worldwide. Material certificates and test reports are available with each shipment.
Frequently Asked Questions
What thickness should I choose for a cold room?
For -18 °C freezers we usually recommend 100-150 mm; for 0-4 °C chill rooms 75-100 mm. Send us your target temperature and we will size the panel for you.
What is the MOQ?
MOQ is about 200 m2 per color and thickness. We can mix thicknesses or colors in one container to reduce your cost.
Do the panels resist moisture?
Yes. PU closed-cell foam absorbs almost no water, and steel facings are galvanized plus pre-painted, so panels suit wet and cold environments.
What is the lead time?
7-15 working days for standard panels after order confirmation; custom colors may add 3-5 days.
Can you supply matching roof panels and accessories?
Yes. We supply PU roof panels, corner profiles, cold room doors and fasteners as a complete system.
Request a Quote
Send us your specifications, quantity and target port — our sales team replies within 24 hours with a detailed quotation. Send an inquiry now.
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