Wall Insulating PU Sandwich Panel
- Effective Width: 950/1000/1150mm
- Profile Types: Micro-wave/Square-wave/Embossed/V8/Plain
- Metal Sheet Thickness: 0.4mm To 0.8mm
- Color of Steel Plate: Customer customize/Aluminum plate
- Core Thickness: 50/75/80/100/120/150/200mm
- Delivery Time: 7-15 days
- Shipping Port: Qingdao Port
- Payment: T/T, L/C, PayPal
- Service Life: ≥15 years
- Product Origin: Henan, China
Product Details
Wall insulating pu sandwich panel is an excellent solution for modern high-efficiency industrial and commercial buildings, cold chain logistics, and low-carbon green factory exterior enclosure systems. With its world-leading thermal insulation performance, 100% airtightness without cold bridges, and superior structural rigidity, it holds a leading position in the prefabricated building supply chain.
In multinational investments, overseas factory construction, or high-standard industrial and commercial real estate development, how to address high energy consumption, high labor costs, and stringent energy efficiency regulations is a core challenge for owners. Polyurethane wall panels are modular building materials specifically designed to solve these long-term operational pain points.
Product Structure
Wall insulating PU sandwich panel undergo high-pressure foaming and multi-track temperature-controlled hot-pressing integrated composite molding on an ultra-long, fully automated continuous production line. Its three-layer structure possesses perfect physical synergy.
High-strength protective outer shell (double-sided color steel plate): Made of high-tensile strength and corrosion-resistant hot-dip galvanized (or zinc-aluminized) high-quality color-coated steel plate (commonly 0.5mm-0.8mm thick). The surface is equipped with a high-performance UV-resistant coating (such as PVDF/HDP), easily resisting sea breezes, salt spray, acid rain, and extreme sun exposure at different latitudes worldwide.
Core insulation layer (rigid polyurethane PU/PIR): The sandwich layer uses continuously foamed rigid polyurethane (PU) or polyisocyanurate (PIR) with a high-molecular formula from a major manufacturer, with a density precisely locked within the golden range of 38-42kg/m³. The interior consists of countless tiny, unconnected closed-cell foam cells.
High-precision tongue and groove locking system: The edges are equipped with a high-precision concealed tongue and groove structure, with internal waterproof and airtight double-layer protection to ensure a tight fit between the panels.
Structure of Wall Insulating PU Sandwich Panel
Technical Parameter Table
| Parameter / Item | International High-Standard Range | Testing / Certification Standards |
| Effective Width | 950mm / 1000mm / 1150mm | Perfectly adapted to 40HQ container loading modules |
| Thickness | 50mm / 75mm / 100mm / 120mm / 150mm / 200mm | Customizable based on thermal resistance requirements of extreme cold/heat climate zones |
| Density | 38kg/m³ – 42kg/m³ | Ensures the best balance point between mechanical support and insulation performance |
| Thermal Conductivity | ≤0.022W/(m·K) | Top-tier insulation performance among global engineering construction materials |
| Closed-cell Rate | ≥ 95% | Premium barrier against moisture and vapor transmission |
| Fire Rating | Class B1 (Flame-retardant, self-extinguishing, low smoke, no flaming droplets) | EN 13501-1 / ASTM E84 / SGS Certified |
| Bonding Strength | ≥ 0.1 MPa (Between the steel sheet and the core) | Automated thermal compression curing ensures long-term resistance to delamination and blistering |
| Eco-friendliness | CFC/HCFC-free foaming, comes with Environmental Product Declaration (EPD) | Perfectly aligned with European Nearly Zero-Energy Building (NZEB) standards |
PU Sandwich Insulation Wall Panel – Load distribution
| Panel Thickness | R-Value(m2.K/W) at 23℃ | Weight(kg) | Load capacity (P=KN/M2) | 0.50 | 0.80 | 1.00 | 1.20 | 1.50 |
| 50mm | 2.24 | 10.06 | L(m) | 3.52 | 3.04 | 2.59 | 2.42 | 2.11 |
| 75mm | 3.30 | 11.06 | L(m) | 4.71 | 4.09 | 3.64 | 3.29 | 2.89 |
| 100mm | 4.45 | 12.05 | L(m) | 5.76 | 5.02 | 4.47 | 4.05 | 3.56 |
| 120mm | 5.55 | 12.84 | L(m) | 6.53 | 5.68 | 5.07 | 4.60 | 4.04 |
| 150mm | 6.65 | 14.04 | L(m) | 7.56 | 6.58 | 5.87 | 5.32 | 4.68 |
Core Features and Technical Advantages
1. Thermal Insulation Performance
Extremely Low Thermal Conductivity: Polyurethane has an extremely low thermal conductivity (≤0.022W/(m⋅K)), several times that of traditional cotton or ordinary foam building materials.
100% Elimination of Cold Bridges: Combined with a concealed bolt design, the panels have a smooth appearance after insertion, with no penetrating metal components. This system-level high airtightness easily passes the world’s most stringent building airtightness pressure tests, directly helping factory owners eliminate hidden energy sources and significantly reduce electricity bills for summer cooling or winter heating.
2. Waterproof and Moisture-proof
Refuses Water Absorption: In traditional metal factory buildings, condensation and dripping water on the interior walls due to temperature differences can easily lead to corrosion of high-precision equipment and mold growth on materials. Polyurethane rigid foam has a closed-cell rate of over 95%, naturally hydrophobic and non-absorbent, effectively providing a fully sealed, moisture-proof rainproof garment for the building, effectively isolating invisible moisture from the outside for a long time.
3. Fire Resistance and Wind Resistance
Self-extinguishing and carbonization flame retardancy: The upgraded PIR (polyisocyanurate) rapidly forms a hard graphitized carbonized layer on its surface when exposed to high temperatures and fire, effectively preventing flame spread and heat penetration, without producing molten droplets, perfectly aligning with international fire safety standards such as European EN 13501-1 (B-s1, d0) and North American ASTM E84.
Strong wind load resistance: The steel plate and polyurethane core possess extremely high peel strength (≥0.1MPa), and the system’s integrated rigidity is excellent, easily withstanding the negative wind pressure suction of extreme typhoons/hurricanes in coastal areas such as the Caribbean or Southeast Asia.
4. Ultimate Assembly Efficiency
Modular construction: 100% precision prefabrication and fixed-length cutting in a large-scale digital intelligent factory in China. After arriving at the overseas project site, workers only need to perform rigid assembly with bolts using the prefabricated steel structure frame, with zero welding and zero cutting on-site. Construction efficiency is increased by 3-4 times, directly halving the overall on-site construction period and high local labor costs.
Global Application Scenarios
Due to its superior physical properties and modern industrial feel, wall insulating PU sandwich panel is widely used in high-end building projects seeking long-term asset preservation.
High-efficiency modern industrial plants and multi-unit workshops: Such as exterior wall systems for precision automobile manufacturing, aerospace assembly, and high-risk heavy industrial workshops.
High-end modern logistics warehousing and cold chain centers: Especially for food processing, ultra-large span Amazon cross-border e-commerce transit warehouses, and temperature-controlled cold storage.
High-precision purification and cleanrooms: Large-area indoor partitions with extremely high requirements for airtightness, heat insulation, and dust prevention, such as cleanrooms for electronic chips and sterile isolation areas for biopharmaceuticals.
Wall insulating PU sandwich panel is an indispensable dual champion of energy efficiency and high turnover in the modern industrial and commercial real estate supply chain. Choosing a reputable manufacturer with extensive experience in providing complete, one-stop overseas solutions (such as Canglong Group) will provide you with a closed-loop management service, encompassing everything from detailed design to compliance, supply of materials, ocean freight booking and customs clearance, to remote/on-site installation guidance. This will offer a high degree of certainty, securing a golden line of defense for the long-term preservation of your green industrial and commercial assets.
Sandwich Panel Production Workshop
Sandwich Panel Packing & Shipping
All the products are loaded at the loading site of our factory using crane and forklift by our skilled workers, who will prevent the goods to be damaged. And all the structure components, panels, bolts and sorts of accessories will be well packed with standard package and it is suitable for ocean transport.
Inspection: 50% inline inspection and 100% full final inspection, make sure all output w/o any mistake.
Packing: Per customer's requirements or per product sizes, full protection packing.
Shipping: Per customer's requirements or per container sizes.
Unloading: We package it as a whole and can be easily pulled out at once with a forklift, which is very convenient.
Our Certificates
Our sandwich panel certificates include EU CE certification, BPS certification, and ICC certification.
Application of Sandwich Panels
Usage scenario: Insulated sandwich panels are used as exterior walls and interior partitions, installed vertically or horizontally on single span or multi span structures. Such as industrial buildings, steel frame structures, warehouses and logistics centers, commercial buildings and offices, fire-resistant buildings, agricultural and livestock buildings, sports halls, exhibition halls, factories, garages, hangars, barns, prefabricated houses, cold storage, clean room, etc.
We provide the following RAL color card colors for your reference. For other colors, please compare the Raul color card colors.
Note: The above color card has a slight deviation due to printing reasons, please refer to the actual products.
If you purchase metal sandwich panels from Canglong Group, we will also provide some accessory products, including self tapping nails, rivets, waterproof caps, polyurethane glass glue, mouth and corner accessories, outer ridge tiles, waterproof eaves, external and internal corners, eaves edging, plugs, door and window edging, purified aluminum profiles, etc.
High-quality Raw Materials
We strictly select high-quality suppliers. All color steel coils and core materials are from China top 500 companies and have undergone strict quality inspections to ensure the basic quality of the products.
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Advanced Production Equipment
The factory is equipped with advanced production equipment, including automated production lines, cNc cutting machines and high-precision pressing equipment, to ensure that the production process of each color steel sandwich panel is accurate and stable.
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Mature Supply Solutions
One-stop supply of all accessories for sandwich panel installation, standardized packaging process, to avoid friction or damage of sandwich panels on the road, easy for customers to unload, saving time and money for customers.
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Q1: What are the main applications of polyurethane sandwich panels?
A: Polyurethane sandwich panels are commonly used for insulation and construction in various building types, including residential, commercial, industrial, and agricultural structures. They are suitable for walls, roofs, ceilings, and floors.
Q2: What are the advantages of polyurethane sandwich panels?
A: Polyurethane sandwich panels offer excellent thermal insulation properties, lightweight construction, high strength-to-weight ratio, versatility, weather resistance, fire resistance (with appropriate treatments), aesthetic appeal, and cost-effectiveness.
Q3: How do polyurethane sandwich panels contribute to energy efficiency?
A: Polyurethane sandwich panels provide effective thermal insulation, reducing heat transfer through walls and roofs. This helps maintain comfortable indoor temperatures and reduces the energy required for heating and cooling, thus contributing to energy efficiency and lower utility bills.
Q4: Are polyurethane sandwich panels environmentally friendly?
A: Polyurethane sandwich panels can be environmentally friendly when produced using sustainable manufacturing practices and materials. Additionally, their energy-saving properties contribute to overall environmental sustainability by reducing energy consumption and greenhouse gas emissions.
Q5: How durable are polyurethane sandwich panels?
A: Polyurethane sandwich panels are known for their durability and resistance to various environmental factors, including weather, moisture, and corrosion. Proper installation and maintenance can further enhance their longevity.
Q6: Are polyurethane sandwich panels easy to install?
A: Yes, polyurethane sandwich panels are relatively easy to install compared to traditional building materials. Their lightweight nature and standardized dimensions facilitate quick and efficient installation, resulting in reduced construction time and labor costs.
Q7: Can polyurethane sandwich panels be customized?
A: Yes, polyurethane sandwich panels can be customized to meet specific design requirements, including color, finish, thickness, and profile. Customization options allow architects and builders to achieve desired aesthetics and performance characteristics for their projects.
Q8: How do I maintain polyurethane sandwich panels?
A: Maintenance requirements for polyurethane sandwich panels are minimal. Regular cleaning with mild detergent and water, inspection for any damage or deterioration, and prompt repair of any issues are recommended to ensure optimal performance and longevity.
Product Features
The metal sandwich panels produced by Canglong are insulated, fire-resistant, environmentally friendly, earthquake resistant, and durable.
