Fuqiang double-skin PU sandwich panels combine rigid polyurethane insulation with color-coated steel facings for fast industrial wall construction. Project buyers can specify panel thickness, steel gauge, coating, color, surface profile and cut length to suit warehouse, factory, modular building and controlled-environment projects. The tongue-and-groove joint supports efficient installation and a continuous building envelope. For a project quotation, provide wall quantities, drawings, required thermal or fire performance, steel specifications, color, destination port and installation schedule.
The double-sided steel PU sandwich panel is a factory-manufactured insulated wall panel consisting of two galvanized and coated steel facings bonded to a continuous polyurethane foam core. Produced on a fully automated continuous manufacturing line, each panel is formed through a precision roll-forming, lamination, and foaming process to achieve consistent core density, stable bond strength, and accurate panel dimensions. The effective width of 1,000 mm and available thickness range from 50 mm to 200 mm make this panel suitable for a wide range of building envelope requirements.
The polyurethane core provides a thermal conductivity of 0.019–0.023 W/(m·K), which helps reduce heat transfer and supports stable indoor temperature control in industrial and commercial applications. The panel structure also provides sound insulation, low water absorption, and Grade B fire performance, making it a reliable choice for projects that require both thermal efficiency and basic fire safety compliance. The hidden-screw installation system and tongue-and-groove joint profile help reduce air leakage and simplify on-site assembly.
This panel is suitable for external wall cladding on industrial facilities, warehouses, logistics centers, commercial buildings, prefabricated structures, and renovation projects. Matching corner trims, window and door trims, starting pieces, and closing pieces are available to complete the installation system. Steel facing thickness, panel length, surface color, and coating type can be customized based on project specifications. Contact Fuqiang to discuss your project requirements and request a technical quotation.
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Panel Construction
The double-sided steel PU sandwich panel is built from three bonded layers: an upper galvanized coated steel facing, a rigid closed-cell polyurethane foam core, and a lower galvanized coated steel facing. The two steel skins are formed into a profiled shape before lamination, providing structural stiffness and a flat finished surface. The panel is produced on a continuous automated manufacturing line, which ensures consistent foam density, uniform thickness, and a stable bond between the core and the steel facings throughout the full panel length.
Surface Material
Both the upper and lower facings are made from hot-dip galvanized steel with a polyester or PVDF paint coating applied for weather resistance and corrosion protection. Steel facing thickness is customizable within the range of 0.3 mm to 0.8 mm, allowing buyers to select a gauge that matches structural load requirements and project budget. A wide selection of surface colors is available, including solid colors, and optional wood-grain, stone, or metallic finishes depending on project aesthetic requirements.
Polyurethane Insulation Core
The core material is closed-cell rigid polyurethane foam with a bulk density of approximately 42 kg/m³. Polyurethane provides a thermal conductivity of 0.019–0.023 W/(m·K), which is among the lowest available for foam-based insulation cores, allowing thinner panels to achieve the same thermal resistance as thicker panels made with alternative core materials. The closed-cell structure limits moisture ingress, with water absorption of 5% or below, and the material provides effective sound attenuation to help reduce the interference of external noise.
Fire Performance
The polyurethane core is formulated to achieve Grade B fire performance classification. This classification indicates that the material is fire-retardant and is designed to help reduce fire spread and limit fire loss in the event of ignition. Buyers with specific fire rating requirements for their project or local building code compliance should confirm the applicable fire test standard and available documentation with the Fuqiang technical team before order placement.
Joint and Sealing System
The panel profile incorporates a tongue-and-groove edge joint that allows adjacent panels to interlock during installation. This joint system supports continuous thermal sealing along the panel edge, helps reduce air infiltration, and minimizes the risk of thermal bridging at the panel-to-panel connection. The hidden-screw fastening system conceals fixings within the joint zone, producing a clean external surface finish while maintaining structural attachment to the supporting framework.
Dimensions and Customization
The effective width is 1,000 mm per panel. Available standard thicknesses are 50 mm, 75 mm, 100 mm, 150 mm, and 200 mm. Panel length is customizable to match project floor-to-eave height or specific structural bay dimensions, reducing site cutting and material waste. Steel facing thickness is selectable from 0.3 mm to 0.8 mm on both the upper and lower skins. Custom surface colors, coating types, panel profiles, and packaging configurations can be arranged based on buyer specifications or OEM requirements.
Project Compatibility and Accessories
The double-sided steel PU sandwich panel is designed for installation on steel-framed, timber-framed, or concrete-framed building structures. The panel can be installed vertically or horizontally depending on the subframe spacing and project design. Matching accessories supplied by Fuqiang include corner trims, window and door surrounds, starting strips, closing pieces, ridge caps, and joint flashings, providing a complete single-source procurement solution. Fasteners, sealants, and installation instructions are available upon request to support contractors and project managers during the installation planning phase.
| Effective Width | Panel Thickness | Core Material | Surface Material | Joint System | Thermal Conductivity | Fire Performance |
| 1,000 mm | 50 / 75 / 100 / 150 / 200 mm | Rigid Closed-Cell PU Foam, Approx. 42 kg/m³ | Color-Coated Galvanized Steel, 0.3–0.8 mm | Tongue-and-Groove with Hidden-Screw Fastening | 0.019–0.023 W/(m·K) | Grade B, Fire-Retardant |
The rigid closed-cell PU core achieves a thermal conductivity of 0.019–0.023 W/(m·K), one of the lowest values available in foam-based insulation. This helps reduce heating and cooling loads and supports stable interior temperature control across a wide range of climates.
The polyurethane core is formulated to meet Grade B fire performance classification, designed to help limit fire spread and reduce potential fire damage. This makes the panel suitable for industrial and commercial applications where basic fire safety compliance is required.
The dense closed-cell foam core and sealed tongue-and-groove joint system work together to reduce the transmission of external noise into the building interior, providing a quieter working environment in warehouses, production facilities, and commercial spaces.
The closed-cell polyurethane structure limits water ingress to 5% or below, helping protect the insulation core from moisture-related performance degradation. The sealed panel joints further reduce the risk of water penetration at the panel connection zones.
Steel facing thickness is selectable from 0.3 mm to 0.8 mm, and a wide range of surface colors and finishes is available. This allows distributors, developers, and contractors to match panel specifications to structural load requirements, regional market preferences, and project aesthetic standards.
The 1,000 mm effective panel width reduces the number of panels and installation joints required per square meter. The tongue-and-groove interlock and hidden-screw fastening system simplify panel alignment and attachment, helping contractors reduce on-site installation time and labor costs.
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For a project-specific selection and quotation, include the information below. Fuqiang will confirm the available configuration, supporting documents, production plan and packing for the exact order.
Thickness selection depends on the target U-value, indoor temperature, climate and local code. Provide the project conditions so the available panel configuration and supporting thermal data can be reviewed.
Steel gauge, coating and color options are confirmed against the project environment, quantity and production specification. Coastal or corrosive locations should be identified in the RFQ.
Container quantity varies with panel thickness, cut length, packing method and accessories. Fuqiang can calculate the loading plan after the panel schedule is confirmed.
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