![\"pu](\"https:\/\/ruhaimaterial.com\/wp-content\/uploads\/2026\/09\/pu-sandwich-wall-panel-stack.jpg\")
<\/figure>\n\n\n\nThe 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.<\/p>\n\n\n\n
Key Features<\/h2>\n\n\n\n\n\n- Best-in-class insulation<\/strong> \u2014 0.021 W\/(m\u00b7K), the lowest k-value among common sandwich cores<\/li>\n\n\n
- Lightweight<\/strong> \u2014 about 10-14 kg\/m2, reduces structure load and crane cost<\/li>\n\n\n
- Water & vapor resistant<\/strong> \u2014 closed-cell foam will not absorb water or grow mold<\/li>\n\n\n
- Any RAL color<\/strong> \u2014 white standard; blue, grey, red and custom colors available<\/li>\n\n\n
- Turnkey solution<\/strong> \u2014 3D layout design and cross-category assembly support included<\/li>\n\n<\/ul>\n\n\n\n
Application Scenarios<\/h2>\n\n\n\n
Buyers choose the PU sandwich wall panel for energy-critical buildings:<\/p>\n\n\n\n
\n\n- Cold storage & freezers<\/strong> \u2014 constant temperature with thin walls<\/li>\n\n\n
- Food & pharma plants<\/strong> \u2014 hygienic, washable insulated wall systems<\/li>\n\n\n
- Prefab & modular buildings<\/strong> \u2014 lightweight walls for fast assembly<\/li>\n\n\n
- Supermarkets & logistics<\/strong> \u2014 energy-saving envelope with clean finish<\/li>\n\n<\/ul>\n\n\n\n
![\"Cold](\"https:\/\/ruhaimaterial.com\/wp-content\/uploads\/2026\/09\/pu-sandwich-wall-panel-white-steel-face.jpg\")
<\/figure>\n\n\n\nConfiguration Options<\/h2>\n\n\n\n\n\n- Core<\/strong> \u2014 polyurethane \/ PIR rigid foam 36-40 kg\/m3<\/li>\n\n\n
- Facing<\/strong> \u2014 0.4-0.8 mm pre-painted \/ galvanized steel<\/li>\n\n\n
- Thickness<\/strong> \u2014 30 \/ 40 \/ 50 \/ 60 \/ 75 \/ 80 \/ 100 \/ 120 \/ 150 mm<\/li>\n\n\n
- Effective width<\/strong> \u2014 950 \/ 1000 mm<\/li>\n\n\n
- Coating<\/strong> \u2014 PE \/ HDPE \/ SMP \/ PVDF<\/li>\n\n\n
- Colors<\/strong> \u2014 white, grey, blue, red or any RAL color<\/li>\n\n<\/ul>\n\n\n\n
Product Specifications<\/h2>\n\n\n\n\nCore density<\/td> 36-40 kg\/m3 (+\/-10%)<\/td><\/tr>\n Thermal conductivity<\/td> 0.021 W\/(m\u00b7K)<\/td><\/tr>\n Steel thickness<\/td> 0.4-0.8 mm<\/td><\/tr>\n Effective width<\/td> 950 \/ 1000 mm<\/td><\/tr>\n Panel length<\/td> 1-11.8 m, customizable<\/td><\/tr>\n Certificates<\/td> CE \/ ISO 9001 \/ ASTM \/ EN 14509<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\nAll products are manufactured in our ISO 9001 certified factory and carry CE \/ SGS certification. Custom requirements are welcome.<\/p>\n\n\n\n
Quality Certifications<\/h2>\n\n\n\n
Ruhai Material is ISO 9001<\/strong> certified and ships products compliant with CE<\/strong> and SGS<\/strong> requirements worldwide. Material certificates and test reports are available with each shipment.<\/p>\n\n\n\nFrequently Asked Questions<\/h2>\n\n\n\nWhat thickness should I choose for a cold room?<\/h3>\n\n\n\n
For -18 \u00b0C freezers we usually recommend 100-150 mm; for 0-4 \u00b0C chill rooms 75-100 mm. Send us your target temperature and we will size the panel for you.<\/p>\n\n\n\n
What is the MOQ?<\/h3>\n\n\n\n
MOQ is about 200 m2 per color and thickness. We can mix thicknesses or colors in one container to reduce your cost.<\/p>\n\n\n\n
Do the panels resist moisture?<\/h3>\n\n\n\n
Yes. PU closed-cell foam absorbs almost no water, and steel facings are galvanized plus pre-painted, so panels suit wet and cold environments.<\/p>\n\n\n\n
What is the lead time?<\/h3>\n\n\n\n
7-15 working days for standard panels after order confirmation; custom colors may add 3-5 days.<\/p>\n\n\n\n
Can you supply matching roof panels and accessories?<\/h3>\n\n\n\n
Yes. We supply PU roof panels, corner profiles, cold room doors and fasteners as a complete system.<\/p>\n\n\n\n
Request a Quote<\/h2>\n\n\n\n
Send us your specifications, quantity and target port \u2014 our sales team replies within 24 hours with a detailed quotation. Send an inquiry now<\/a>.<\/p>\n\n\n\n
Application Scenarios<\/h2>\n\n\n\n
Buyers choose the PU sandwich wall panel for energy-critical buildings:<\/p>\n\n\n\n
- \n\n
- Cold storage & freezers<\/strong> \u2014 constant temperature with thin walls<\/li>\n\n\n
- Food & pharma plants<\/strong> \u2014 hygienic, washable insulated wall systems<\/li>\n\n\n
- Prefab & modular buildings<\/strong> \u2014 lightweight walls for fast assembly<\/li>\n\n\n
- Supermarkets & logistics<\/strong> \u2014 energy-saving envelope with clean finish<\/li>\n\n<\/ul>\n\n\n\n
<\/figure>\n\n\n\nConfiguration Options<\/h2>\n\n\n\n
- \n\n
- Core<\/strong> \u2014 polyurethane \/ PIR rigid foam 36-40 kg\/m3<\/li>\n\n\n
- Facing<\/strong> \u2014 0.4-0.8 mm pre-painted \/ galvanized steel<\/li>\n\n\n
- Thickness<\/strong> \u2014 30 \/ 40 \/ 50 \/ 60 \/ 75 \/ 80 \/ 100 \/ 120 \/ 150 mm<\/li>\n\n\n
- Effective width<\/strong> \u2014 950 \/ 1000 mm<\/li>\n\n\n
- Coating<\/strong> \u2014 PE \/ HDPE \/ SMP \/ PVDF<\/li>\n\n\n
- Colors<\/strong> \u2014 white, grey, blue, red or any RAL color<\/li>\n\n<\/ul>\n\n\n\n
Product Specifications<\/h2>\n\n\n\n
\n
Core density<\/td> 36-40 kg\/m3 (+\/-10%)<\/td><\/tr>\n Thermal conductivity<\/td> 0.021 W\/(m\u00b7K)<\/td><\/tr>\n Steel thickness<\/td> 0.4-0.8 mm<\/td><\/tr>\n Effective width<\/td> 950 \/ 1000 mm<\/td><\/tr>\n Panel length<\/td> 1-11.8 m, customizable<\/td><\/tr>\n Certificates<\/td> CE \/ ISO 9001 \/ ASTM \/ EN 14509<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\n All products are manufactured in our ISO 9001 certified factory and carry CE \/ SGS certification. Custom requirements are welcome.<\/p>\n\n\n\n
Quality Certifications<\/h2>\n\n\n\n
Ruhai Material is ISO 9001<\/strong> certified and ships products compliant with CE<\/strong> and SGS<\/strong> requirements worldwide. Material certificates and test reports are available with each shipment.<\/p>\n\n\n\n
Frequently Asked Questions<\/h2>\n\n\n\n
What thickness should I choose for a cold room?<\/h3>\n\n\n\n
For -18 \u00b0C freezers we usually recommend 100-150 mm; for 0-4 \u00b0C chill rooms 75-100 mm. Send us your target temperature and we will size the panel for you.<\/p>\n\n\n\n
What is the MOQ?<\/h3>\n\n\n\n
MOQ is about 200 m2 per color and thickness. We can mix thicknesses or colors in one container to reduce your cost.<\/p>\n\n\n\n
Do the panels resist moisture?<\/h3>\n\n\n\n
Yes. PU closed-cell foam absorbs almost no water, and steel facings are galvanized plus pre-painted, so panels suit wet and cold environments.<\/p>\n\n\n\n
What is the lead time?<\/h3>\n\n\n\n
7-15 working days for standard panels after order confirmation; custom colors may add 3-5 days.<\/p>\n\n\n\n
Can you supply matching roof panels and accessories?<\/h3>\n\n\n\n
Yes. We supply PU roof panels, corner profiles, cold room doors and fasteners as a complete system.<\/p>\n\n\n\n
Request a Quote<\/h2>\n\n\n\n
Send us your specifications, quantity and target port \u2014 our sales team replies within 24 hours with a detailed quotation. Send an inquiry now<\/a>.<\/p>\n\n\n\n
- Facing<\/strong> \u2014 0.4-0.8 mm pre-painted \/ galvanized steel<\/li>\n\n\n
- Food & pharma plants<\/strong> \u2014 hygienic, washable insulated wall systems<\/li>\n\n\n