
Magnesium Oxide Sandwich Panel
- Effective Width: 950/980/1150mm
- Metal Sheet Thickness: 0.4mm to 0.8mm
- Coating: PE/HDP/PVDF/SMF
- Plating: Hot-galvanize/Aluminium/Stainless
- Color of Steel Plate: White/Offwhite/Blue or Customized
- Core Material: Magnesium Oxide
- Core Thickness: 50/75/100/150mm
- Fire Rating: Class A1
- 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
Magnesium oxide sandwich panel is high-performance building envelope materials that integrate fire resistance, moisture resistance, and thermal insulation. They utilize a unique inorganic magnesium oxide material as their core, which is composite-formed with color-coated steel sheets through an automated production line. As an upgraded alternative to traditional EPS/XPS and rock wool sandwich panels, magnesium oxide sandwich panels, with their superior inorganic flame-retardant properties and excellent weather resistance, are becoming the preferred solution for industrial plants, clean rooms, and public buildings.

Material Composition
- Facing Material: Typically uses aluminized zinc or galvanized color-coated profiled steel sheets (PPGI/PPGL), with thicknesses ranging from 0.4mm to 0.8mm. Coatings can be customized with PVDF, SMP, or PE, providing excellent UV resistance and corrosion resistance.
- Core Material: High-density magnesium oxide board (MgO Board). The main components are magnesium oxide (MgO), magnesium chloride (MgCl₂), and modifiers, manufactured through a high-temperature and high-pressure curing process. The core material is free of asbestos, formaldehyde, and benzene compounds, making it a typical green and environmentally friendly material.
- Adhesive: High-strength polyurethane (PU) two-component adhesive or epoxy resin adhesive to ensure the panel and core material do not delaminate under extreme temperatures.
Structural Form
- Connection Method: Concealed tongue and groove joints or exposed nail overlaps are used, along with EPDM waterproof strips, to effectively block thermal bridges and improve airtightness and watertightness.
- Cross-sectional Shape: Usually a flat panel, but can be reinforced with ribs to increase rigidity according to customer requirements.
- Construction Layers: Upper profiled steel sheet + adhesive layer + magnesium oxide core material + adhesive layer + lower profiled steel sheet.

Performance Parameters
Parameter Item | Typical Value / Description | Test Standard |
|---|---|---|
Standard Thickness | 50mm, 75mm, 100mm, 150mm | – |
Effective Width | 950mm, 980mm, 1150mm | – |
Core Density | ≥ 1100 kg/m³ | GB/T 25975 |
Thermal Conductivity | ≤ 0.036 W/(m·K) | GB/T 10294 |
Fire Resistance Rating | 1 Hour – 4 Hours (Varies by thickness) | GB/T 9978 (China) / ASTM E119 (US) |
Reaction to Fire | Class A1 (Non-combustible) | GB 8624 / EN 13501-1 |
Bending Capacity | ≥ 1.2 kN/m² | GB/T 5237 |
Sound Insulation | 35 – 45 dB | GB/T 19889 |
Features of Magnesium Oxide Sandwich Panels
True Fireproofing: Unlike organic foam boards, magnesium oxide core material is an inorganic mineral, non-combustible, smokeless, and non-toxic when exposed to fire, with a melting point as high as 2800°C, effectively preventing the spread of fire and buying valuable time for evacuation and property protection.
Superior Moisture Resistance: Solves the problem of ordinary rock wool boards absorbing moisture and causing deformation. Magnesium oxide sandwich panel maintain structural stability and strength in humid environments (such as coastal areas and underground).
Eco-Friendly: Production generates no industrial waste, and no harmful gases are released during use. They are recyclable after disposal, meeting LEED and other international green building certification requirements.
High Strength: The high-density core material gives the panels excellent impact resistance and load-bearing capacity, making them suitable for use as structural support walls.

Advantages of Magnesium Oxide Sandwich Panel
- Low Life Cycle Cost: Although the initial investment is slightly higher than ordinary color steel panels, their extremely long service life (up to 25 years or more) and extremely low maintenance costs significantly reduce the total cost of ownership (TCO).
- Double Construction Efficiency: Lightweight and high-strength, modular installation, combined with a prefabricated steel structure frame, can significantly shorten the construction period and reduce labor costs.
- Strong Compliance: Easily meets stringent global building fire safety regulations (such as Civil Defense requirements in the Middle East and fire protection codes for high-rise buildings in Europe and America).
- Wide Environmental Adaptability: Maintains stable performance in both high-salt-fog environments of tropical islands and freeze-thaw cycles of cold regions.
Application Scenarios
Industrial and Logistics: High-standard electronics factories, food and beverage factories, pharmaceutical warehouses, and logistics sorting centers (areas with high fire resistance requirements).
Public and Commercial: Schools, hospitals, airport terminals, stadiums, and atrium partitions and ceilings in shopping malls.
Cleanroom Engineering: Biological laboratories, pharmaceutical workshops, hospital operating rooms, and semiconductor cleanrooms (due to their low dust generation and antibacterial properties).
Special Facilities: Tunnel wall panels, subway platforms, ship compartments, and enclosure systems for chemical plants.
Civil Buildings: Modular houses, container houses, and villa exterior wall and roof systems.

Canglong Group not only supplies high-quality magnesium oxide sandwich panels, but also provides one-stop solutions from detailed design, precision manufacturing, global booking and shipping to on-site installation guidance. Whether your project is located in a tropical rainforest or a desert, our products undergo rigorous factory testing to ensure they arrive on site in perfect condition.
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.



