XPS Extruded Polystyrene Cold Room Sandwich Panel — High-Performance Thermal Insulation for Industrial Cold Storage

Engineered by Shanghai XiangNing Electromechanical Equipment Co., LTD, our XPS cold room panels deliver reliable temperature control for food processing facilities, pharmaceutical warehouses, and agricultural cold chain hubs worldwide.

Thermal Conductivity: ≤0.024 W/m·K
Fire Rating: B1 (Flame Retardant)
Thickness: 100 / 150 / 200 mm
CE & ISO 9001 Certified

XPS extruded polystyrene cold room sandwich panel with color-coated steel skin, manufactured by xnair for industrial cold storage applications

Product Summary: The xnair XPS cold room panel is a prefabricated sandwich panel featuring an extruded polystyrene (XPS) foam core bonded between two metal skins. With a closed-cell structure that achieves thermal conductivity as low as ≤0.024 W/m·K, these panels minimize cold loss in walk-in freezers, blast chillers, and refrigerated warehouses. The cam-lock joint system ensures rapid on-site assembly without thermal bridging. Available in 100mm, 150mm, and 200mm thicknesses, each panel is factory-tested for dimensional accuracy and thermal performance before dispatch.

Technical Specifications

The table below lists the core engineering parameters that global B2B buyers evaluate when sourcing XPS cold room panels. All values are measured under ISO 8301 thermal resistance testing protocols.

Parameter	Specification	Unit / Standard
Core Material	XPS (Extruded Polystyrene) — closed-cell foam	EN 13164
Thermal Conductivity (λ)	≤0.024	W/m·K (at 10°C mean temp.)
Core Density	32 – 42	kg/m³
Fire Rating	B1 (Flame Retardant) / Class B-s2,d0	GB 8624 / EN 13501-1
Panel Thickness Options	100 / 150 / 200 (custom up to 250)	mm
Metal Skin Material	Color-coated galvanized steel (0.5–0.8mm) / Stainless steel 304 / Embossed aluminum	EN 10346 / ASTM A240
Maximum Panel Length	12,000	mm
Effective Width	1,000 / 1,150	mm
Joint System	Cam-lock (eccentric lock) / Tongue-and-groove	—
Temperature Range (Ambient)	-40 to +40	°C
Applicable Voltage (Accessories)	110V / 220V / 380V / 440V — 50Hz / 60Hz	Multi-standard
Refrigerant Compatibility	R-404A, R-449A, R-290, CO₂ (R-744) — low-GWP ready	EN 378

Note: Actual internal usable volume is marginally reduced by panel thickness. For a 6m × 4m × 3m cold room using 150mm panels, the net internal dimensions are approximately 5.7m × 3.7m × 2.85m. We provide precise volume calculations with every quotation.

Application Scenarios

XPS cold room panels from xnair serve a broad range of temperature-controlled environments. The following three sectors represent the highest procurement volumes globally for this product category.

xnair XPS cold room panels installed in a commercial food processing cold storage facility operating at -18 degrees Celsius for frozen meat preservation

Food Processing & Cold Chain Logistics

In meat, seafood, and dairy processing plants, temperature stability is non-negotiable. Our XPS panels maintain internal temperatures from -25°C to +4°C with minimal compressor cycling, directly reducing energy costs by an estimated 18–25% compared to mineral wool alternatives. The non-hygroscopic XPS core prevents moisture ingress that would otherwise degrade insulation performance over time.

xnair XPS cold room panels used in a GMP-compliant pharmaceutical cold storage warehouse with temperature mapping sensors for vaccine and biologic storage at 2 to 8 degrees Celsius

Pharmaceutical & Healthcare Cold Storage

GDP (Good Distribution Practice) and GMP guidelines require validated temperature mapping across the entire storage volume. xnair panels are specified with stainless steel 304 skins for cleanroom-compatible pharmaceutical warehouses storing vaccines, insulin, and biologics at tightly controlled 2–8°C ranges. The smooth, non-porous surface allows for repeated sanitization without panel degradation.

xnair XPS cold room panels in an agricultural produce cold storage facility for long-term apple and citrus fruit preservation with controlled atmosphere technology

Agricultural Produce Preservation

Post-harvest losses in developing markets often exceed 30% due to inadequate cold chain infrastructure. Our XPS cold room panels enable rapid deployment of on-farm cold storage for fruits, vegetables, and flowers. The cam-lock assembly system allows local crews to erect a 200m³ cold room in under three working days, creating immediate value at the point of harvest.

Engineering & Construction Details

Every xnair XPS cold room panel is built around a continuous XPS foam core produced through an extrusion process that yields a uniform, closed-cell structure. This is fundamentally different from molded EPS panels, which rely on bead fusion and exhibit higher water absorption rates over time.

Cross-section engineering diagram of xnair XPS cold room panel showing extruded polystyrene core at 150mm thickness, color-coated steel skins, and cam-lock joint mechanism for thermal bridge-free assembly

XPS Core: Extruded polystyrene with closed-cell structure (>95% closed cells), providing consistent thermal resistance across the entire panel surface. Unlike open-cell foams, the XPS core does not absorb ambient moisture, preserving insulation integrity over decades of service.
Metal Skin Bonding: Two-component polyurethane adhesive is applied under controlled factory conditions to bond the XPS core to the metal skins. Peel strength exceeds 0.15 MPa, tested per EN 14509.
Cam-Lock Joint: Eccentric cam-lock mechanisms are embedded at 600mm intervals along the panel edge. A 6mm hex key rotates the cam, drawing adjacent panels into compression and creating a continuous thermal envelope without exposed metal fasteners.
Edge Sealing: Panel edges are sealed with a factory-applied PVC gasket that compresses during cam-lock engagement, preventing air leakage and condensation at panel joints.
Corner & Ceiling Panels: Purpose-cut mitred corner panels and reinforced ceiling panels with additional steel support profiles are available for walk-in freezer configurations requiring clear spans up to 6 meters.

Global Adaptability

xnair XPS cold room panels are designed and tested to perform reliably across diverse climatic and regulatory environments. The following regional considerations address the most common technical inquiries from international buyers.

Africa & Middle East: High Ambient Temperature Performance

In regions where daytime ambient temperatures routinely exceed 45°C, the thermal gradient across the cold room envelope is extreme. Our 200mm XPS panel configuration is recommended for these markets, reducing the U-value to below 0.12 W/m²·K. The reflective white polyester coating on the external metal skin (solar reflectance index >82) further reduces radiative heat gain, lowering total cooling load by an estimated 12–15% compared to standard finishes.

Europe & North America: Regulatory Compliance & Low-GWP Refrigerants

xnair panels are CE marked under the Construction Products Regulation (EU) No. 305/2011. The XPS core meets EN 13164 standards for thermal insulation products. Our panel system is fully compatible with low-GWP refrigerants mandated by the EU F-Gas Regulation (EU) No. 517/2014, including R-290 (propane) and CO₂ (R-744) transcritical systems. For the North American market, panels can be supplied with UL-recognized components upon request.

Southeast Asia & South America: High Humidity & Corrosion Resistance

In tropical climates with relative humidity consistently above 85%, panel corrosion and mold growth are primary failure modes for cold storage enclosures. xnair addresses this with stainless steel 304 skins (grade 1.4301) and anti-fungal PVC gaskets at all joints. All steel components undergo 720-hour salt spray testing (ISO 9227) before shipment qualification. For coastal installations within 5km of saltwater, we recommend upgrading to stainless steel 316L skins.

Export Logistics & Container Packaging

Overseas shipping of prefabricated panels demands careful attention to load securing and moisture protection. xnair has developed standardized container packing protocols that have been validated across over 200 export shipments to date.

xnair XPS cold room panels packed in a 40-foot high-cube shipping container with edge protectors, desiccant packs, and steel strapping for secure ocean freight transport

Edge Protection: Every panel corner is fitted with reinforced cardboard edge protectors before stacking, preventing cosmetic damage during container loading and unloading.
Desiccant Integration: Silica gel desiccant packs (500g per pallet) are placed inside the shrink-wrapped pallet units to maintain sub-40% relative humidity during sea transit.
Load Distribution: Panels are stacked flat on A-grade fumigated plywood pallets with load spreaders, ensuring even weight distribution across the container floor. Maximum pallet weight is limited to 1,800 kg.
Container Fitment: A standard 40-foot high-cube container accommodates approximately 1,200–1,500 m² of panel surface area, depending on thickness. We provide a detailed container loading plan with every proforma invoice.

Factory Quality Control

Every production batch undergoes a documented inspection protocol before release. Our QC laboratory is equipped with a guarded hot plate apparatus (for thermal conductivity verification), a universal testing machine (for bond strength), and a dimensional inspection jig accurate to ±0.5mm.

Quality control technician at xnair factory conducting dimensional inspection and thermal conductivity verification on XPS cold room panels prior to export packaging

100% Dimensional Check: Every panel is measured for length, width, and thickness against the production order. Tolerances are held to ±1.5mm on thickness and ±2mm on length.
Thermal Conductivity Sampling: One XPS core sample per production shift is tested using a guarded hot plate apparatus per ISO 8301, ensuring λ remains ≤0.024 W/m·K.
Bond Integrity Test: A peel adhesion test (EN 14509 method) is performed on randomly selected panels to confirm bond strength between the XPS core and metal skins exceeds 0.15 MPa.
Visual Inspection: Each panel surface is inspected under 500-lux lighting for scratches, dents, or coating defects. Panels failing visual criteria are quarantined and reworked.

Frequently Asked Questions

How are XPS cold room panels installed on site? +

xnair XPS cold room panels use a cam-lock joint system. Panels are connected by rotating the built-in cam-lock mechanism with a standard 6mm hex key, pulling adjacent panels tightly together for a seamless thermal envelope. No specialized tools beyond a hex wrench are required. Each shipment includes a printed installation manual, and we also provide video guidance via a private link. Most local crews can assemble a standard cold room within 2–4 working days after a brief familiarization.

Can the panel thickness be customized for specific temperature requirements? +

Yes. xnair offers XPS cold room panels in standard thicknesses of 100mm, 150mm, and 200mm. For deep-freeze applications operating below -25°C, we recommend 150mm or 200mm panels to maintain energy efficiency and limit compressor runtime. Custom thicknesses up to 250mm are available for bulk OEM orders exceeding 500 m². Our engineering team can provide a heat load calculation to help you select the optimal thickness for your specific climate zone and target temperature.

What is the typical delivery time for overseas container orders? +

Standard production lead time is 15–25 working days depending on order volume and panel specifications. Sea freight transit times vary by destination: approximately 25–35 days to major European ports, 20–30 days to the Middle East and Gulf region, and 30–40 days to South American ports. We provide reinforced container packing with edge protectors and desiccant packs to safeguard panels during long-distance transit. Air freight is available for urgent smaller orders upon request.

What surface materials are available for the metal skins? +

xnair XPS cold room panels are available with three metal skin options: (1) color-coated galvanized steel in standard RAL 9010 white or custom RAL colors, suitable for general cold storage; (2) stainless steel 304 (grade 1.4301) for food-grade and pharmaceutical environments requiring frequent washdowns; and (3) embossed aluminum for lightweight applications. All surface materials undergo 720-hour salt spray testing (ISO 9227) to validate corrosion resistance before shipment qualification.

Quality Assurance & Industrial Certifications

Shanghai XiangNing Electromechanical Equipment Co., LTD operates under a certified ISO 9001:2015 quality management system. Every XPS cold room panel shipment is accompanied by a batch test certificate documenting the thermal conductivity, dimensional tolerance, and bond strength results for that production run.

ISO 9001:2015 — Quality management system certification covering design, manufacturing, and export of cold room sandwich panels.
CE Marking — Panels conform to EN 13164 (thermal insulation products) and EN 14509 (self-supporting double-skin metal-faced insulating panels).
GB 8624 B1 Fire Rating — XPS core material certified as flame-retardant under Chinese national building material fire classification standards, equivalent to Class B-s2,d0 per EN 13501-1.
Pre-Shipment Testing Protocol: 100% dimensional inspection, thermal conductivity sampling per shift, bond peel testing on random samples, and visual surface inspection under 500-lux lighting form our standard release criteria.
Third-Party Audits: We welcome buyer-nominated third-party inspection agencies (SGS, Bureau Veritas, TÜV) to witness testing and inspect cargo prior to container loading at our Shanghai facility.