Why Choose Pupanel 40mm Sandwich Panel?
- 25 years of manufacturing experience provide sandwich panels in various thicknesses for dozens of countries.
- Choosing 40mm instead of 50mm helps clients save over €5,000,000.
- A 40mm sandwich panel specialized production line enhances product consistency.
- Inspecting over 3,000 batches of 40mm sandwich panels annually with a < 0.5% defect rate.
Pupanel- Your Reliable 40mm Sandwich Panel Manufacturer in China
Pupanel is a professional 40mm sandwich panel manufacturer in China, dedicated to providing high-performance 40mm sandwich panels. We focus on achieving performance breakthroughs in 40mm sandwich panels, ensuring they deliver comparable thermal insulation, fire resistance, and sound insulation to 50mm panels while maintaining a low self-weight.
We offer full-dimensional customization, including core material, metal panel, size, color, and surface coating. The 40mm sandwich panel is widely used in industrial plants, cold storage facilities, and public and commercial buildings.
Our 40mm Sandwich Panel
Polyurethane, with a thermal conductivity of 0.022W/(m·K), is often used in cold-chain operations with strict temperature control and in manufacturing workshops for precision instruments.
Rock wool is a Class A non-combustible material and can achieve sound insulation with a thickness of 40mm. It is often used in fire compartments and in noise-sensitive environments.
Polystyrene has a low cost and basic insulation and soundproofing properties. It is suitable for regular storage, projects with limited budgets, or temporary facilities.
Glass fiber has excellent corrosion resistance, thermal insulation, fire resistance, and sound insulation. It is commonly used in industrial plants, cold storage facilities, and clean rooms.
Its core material has A-level fire resistance performance, strong waterproof capabilities, and is not prone to deformation or collapse. It is commonly used in purification workshops, cold storage rooms, factories, compartments, etc.
Color steel panels are available in various colors and combine beauty and practicality. They are the most widely used 40mm sandwich panels.
The stainless steel panel has a high chromium content, providing excellent corrosion resistance and meeting the strict hygiene standards of the food and pharmaceutical industries.
The aluminum alloy panels are lightweight, corrosion-resistant, and highly electrically conductive. They are widely used in lightweight structures in the transportation and aviation industries, as well as in buildings with high heat dissipation requirements.
Features of 40mm Sandwich Panels
The metal panel’s high mechanical strength and 40mm core thickness provide strong load capacity, allowing for larger purlin spacing and reducing the total steel used for purlins.
The 40mm thickness offers an ideal thermal conductivity, significantly reducing operating energy consumption compared to the 20mm thickness.
The 40mm thickness enhances compressive strength without increasing its weight.
The 40mm sandwich panel is easier to handle than those over 50mm, reducing labor costs and machinery requirements.
The 40mm sandwich panel can be seamlessly integrated with common building modules, reducing waste from on-site cutting.
The rapid deduction design and the ≤3mm inter-panel alignment accuracy reduce the installation adjustment time by 50%.
The Golden Balance between Performance and Cost
The insulation performance of the 40 mm sandwich panel is 85% of that of the 50 mm panel, while its cost is only 70% of the 50 mm panel’s. Its flexural rigidity is 40% higher than that of the 30mm panel, and its weight only increases by 15%. It achieves an excellent balance between performance and cost, preventing you from paying a premium for performance.
Fast Construction Speed
The 40mm sandwich panel has a lightweight structure, enabling a daily average of 150 square meters per person. Combined with concealed quick fasteners, construction efficiency improves by 40% compared to traditional methods.
Applications of 40mm Sandwich Panels
The 40mm polyurethane sandwich panel is often used as the exterior wall material for industrial buildings due to its excellent insulation properties.
The 40mm rock wool sandwich panel is thin and lightweight, with excellent fire-resistance properties, and is often used as a fire separation wall in office areas or non-precision processing zones.
The 40mm sandwich panel has a lightweight design, which reduces the load on the top steel structure. Its smooth, easy-to-clean characteristics make it commonly used as a ceiling panel in clean rooms and laboratories.
The refrigerated truck compartments often use 40mm polyurethane sandwich panels to improve insulation and increase internal load capacity.
40mm sandwich panels are commonly used in the maintenance structures of commercial buildings, achieving modern high-performance commercial facades.
Public buildings such as schools and community centers often use high-density 40mm rock wool sandwich panels for acoustic treatment of interior walls.
- Our Factory
- Project Case
For general industrial buildings and warehouses in most Chinese climate regions, 40mm polyurethane sandwich panels can meet the minimum energy-saving requirements for the enclosure structure.
For regions with extreme weather, thicker sandwich panels or composite insulation solutions may be needed. You only need to provide the region where your building project is located and the building type, and we will offer a free technical assessment and prepare an analysis report.
The maximum installation span for standard 40mm sandwich panels is 2.5-3.5 meters. It depends on the core material type, the thickness of the metal plates, and the panel’s peak load.
The higher the core material stiffness and the greater the metal plate thickness, the larger the maximum allowable installation span. The greater the wind load, the smaller the maximum allowable support span.
For coastal areas or locations prone to chemical corrosion, we recommend high-corrosion-resistant sandwich panels. The metal panels are made of galvanized aluminum and coated with PVDF, enabling them to withstand salt fog for over 1000 hours.
At the side sealing areas, we use weather-resistant sealants, such as neutral silicone and butyl sealing tape, that withstand high and low temperatures and provide excellent waterproof performance.
For minor damage or loss (<50㎡), we coordinate shipment from our inventory within 72 hours as a specialized manufacturer. For shortages and damages exceeding 50 square meters, we will incorporate the replenishment orders into the latest production batch to ensure delivery within 5 to 7 days.
Conducting rapid inspections of installation quality at the site ensures the structure’s tightness and safety and avoids costly rework later.
At the installation site, the quality of the installation can be checked using simple tools. For example, a magnetic thickness gauge can measure steel plate thickness, ensuring deviation is within ±0.03mm. Pour water into the seam for 15 minutes, and there should be no leakage on the inner side.
What Is A 40mm Sandwich Panel?
The 40mm sandwich panel consists of two metal panels and a 40mm-thick core. It is a lightweight building material that provides strength, insulation, and fire resistance for building roofs and walls.
For construction contractors and engineering firms, selecting the appropriate sandwich panel thickness is crucial. A too-thin thickness may not meet your expected performance, while a too-thick thickness may cost you too much for the performance. Therefore, we developed a 40mm sandwich panel that strikes a balance between performance and cost.
Why Is The 40mm A Highly Cost-Effective Choice for Your Projects?
Cost Advantage
Although a slight thickness increase increases costs, the performance improvement is much greater than the cost increase when costs are averaged over the total construction cost.
The 40mm sandwich panel made of the same material is lighter than sandwich panels with thicknesses of 50mm or more. During construction, it is easier for workers to handle, which increases the installation speed and reduces the reliance on heavy machinery, saving labor and machinery costs.
Project Schedule Advantage
The self-weight of a 40mm sandwich panel is only 6%-7% of that of traditional brick walls. A single standard-sized 40mm PU sandwich panel weighs approximately 85kg, and two workers can easily carry it.
The lightweight enables quick positioning during installation, facilitating high-altitude operations and enhancing safety. The high installation efficiency shortens the construction period, enabling the project to go into production more quickly.
Performance Advantage
Compared with 30mm-thick sandwich panels, 40mm-thick sandwich panels offer a 20%-30% increase in insulation, reducing heating and cooling costs and saving energy.
The flexural strength of the 40mm sandwich panel, made of the same material, is 30% higher than that of the 30mm panel, reducing panel deformation under pressure.
Sufficient rigidity allows larger purlin spacing, reducing steel usage.
The 40mm thickness provides sufficient thermal insulation. For example, double-layered rock wool sandwich panels can achieve a fire resistance of 3 hours.
Supply Chain Advantages
The 40mm thickness is the most common and universal specification in industrial buildings and meets the energy-saving design standards and basic usage requirements of most countries. Our 40mm sandwich has high production efficiency and stable quality control.
We have a dedicated production line for 40mm sandwich panels, which can simultaneously meet the demands of 3 to 4 large-scale projects. The single-thickness production increases the consistency of 40mm sandwich panels by 40%.
There are 32 quality control points on the production line for real-time monitoring, ensuring the reject rate for 40mm sandwich panels is below 0.5% before leaving the factory.
We offer a comprehensive selection of colors and accessories. The panels can be customized in 30 RAL standard colors, and we provide connectors compatible with mainstream building systems.
Appearance Advantages
In modern architecture, the fence’s visual thickness and the building height directly affect the overall visual effect. The greater the thickness, the more pronounced the sense of volume, and the overall architectural style tends to be traditional industrial. A thickness-to-height ratio of 40mm is in the golden range for modern architecture, adding a light, modern feel to your building.
The thin thickness results in a small wave degree on the panel surface. Its continuous reflection light spot is 30% higher than that of thick panels. Under natural light, the building facade presents a seamless, mirror-like appearance and shows a high-end texture when captured by commercial photography lenses.
The 40mm panel has a higher substrate flatness compared to the thick panel. Therefore, the coating tension can be better controlled during coating, resulting in a more uniform surface gloss.
