Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of polyurethane sandwich panels in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
Polyurethane Sandwich Panels (PU Sandwich Panels)
Polyurethane Sandwich Panels (PU Panels) are high-performance insulated building materials widely used in modern construction and industrial applications. Featuring a rigid polyurethane (PUR/PIR) core bonded between two metal sheets, these panels provide superior thermal insulation, structural strength, and energy efficiency.
Compared with traditional materials, PU sandwich panels significantly reduce energy consumption, improve installation efficiency, and ensure long-term durability. They are extensively used in cold storage facilities, prefabricated buildings, warehouses, and cleanroom environments.
Product Specifications
| Parameter | Metric | Imperial |
|---|---|---|
| Panel Thickness | 30 / 50 / 75 / 100 / 150 / 200 mm | 1.18" – 7.87" |
| Width | 950 / 1000 / 1150 mm | 37.4" – 45.3" |
| Length | ≤ 12,000 mm (custom) | ≤ 39.37 ft |
| Steel Thickness | 0.3 – 0.8 mm | 0.012" – 0.031" |
Core Material Properties
| Property | Value |
|---|---|
| Density | 38 – 45 kg/m³ |
| Thermal Conductivity | ≤ 0.022 W/m·K |
| Compressive Strength | ≥ 150 kPa |
| Fire Rating | B1 / B2 / PIR (EN standard optional) |
Tolerance
| Item | Tolerance |
|---|---|
| Thickness | ±0.5 mm |
| Length | ±2 mm |
| Width | ±1 mm |
Chemical Composition (PU Core)
| Component | Content (%) |
|---|---|
| Polyol | 35 – 45 |
| Isocyanate (MDI) | 45 – 55 |
| Blowing Agent | 3 – 8 |
| Additives (Flame Retardant, Catalyst) | 2 – 5 |
Product Features
1. Excellent Thermal Insulation
PU core offers one of the lowest thermal conductivity values among insulation materials, making it ideal for energy-saving buildings.
2. Lightweight & High Strength
Combines low weight with high structural rigidity, reducing building load and improving installation efficiency.
3. Fire Resistance Options
Available in PUR and PIR cores, with PIR providing enhanced fire resistance performance.
4. Superior Air Tightness
Seamless joint design ensures excellent sealing, suitable for cleanrooms and cold storage.
5. Corrosion Resistance
Pre-painted galvanized steel or stainless steel surfaces ensure long-term durability in harsh environments.
Products Applications
Cold Storage & Refrigeration Facilities
Industrial Plants & Warehouses
Prefabricated Buildings
Clean Rooms (Food, Pharmaceutical, Electronics)
Roofing and Wall Cladding Systems
Agricultural Buildings
Comparison: PU vs EPS vs Rock Wool Panels
| Feature | PU Panel | EPS Panel | Rock Wool Panel |
|---|---|---|---|
| Insulation | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ |
| Fire Resistance | ⭐⭐⭐⭐ (PIR higher) | ⭐⭐ | ⭐⭐⭐⭐⭐ |
| Weight | Light | Very Light | Heavy |
| Cost | Medium | Low | High |
Inspection & Quality Assurance
We implement a strict quality control system to ensure every panel meets international standards:
Raw Material Inspection (PU chemicals, steel coils)
Production Line Monitoring (Continuous foaming process)
Dimensional & Thickness Testing
Thermal Conductivity Testing
Fire Resistance Testing
Third-party inspection available (SGS, BV, TUV)
All products comply with ISO 9001 quality management system.
Product Delivery Standards
Standard Export Packaging (Plastic Film + Steel Frame)
Container Loading Optimization
Moisture-proof Protection
Fast Delivery Time: 7–15 days
Global Shipping Support (FOB / CIF / DDP)
FAQ
1. What is the difference between PUR and PIR panels?
PIR panels offer better fire resistance and thermal stability compared to PUR panels.
2. What thickness should I choose?
Depends on application:
Cold storage: 100–200 mm
Wall panels: 50–100 mm
Roofing: 30–75 mm
3. Are PU panels waterproof?
Yes, they have excellent water resistance and air tightness.
4. Can panels be customized?
Yes, thickness, length, color, coating, and core density can all be customized.
5. What is the service life?
Typically 15–25 years depending on environment and maintenance.
Contact Us
Looking for reliable polyurethane sandwich panel suppliers?
Contact us today for technical support, pricing, and customized solutions.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+8615769214734
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