Great Wall insulated panels (also written “Great-Wall panels” or “Great Wall roof panels”) are a category of insulated aluminum sandwich panels named for their interlocking joint profile — a proprietary tongue-and-groove system developed in China that resembles the crenellations of the Great Wall. They are the dominant roofing and wall cladding product for industrial construction across the Middle East and Southeast Asia, manufactured in China and exported worldwide.
What Makes a Panel a “Great Wall” Panel?
The term “Great Wall panel” refers specifically to the panel joint design. Unlike earlier sandwich panels that used exposed screw fixings at laps, Great Wall panels interlock with a concealed-fix system: the male tongue of one panel slides into the female groove of the adjacent panel, and the fixing screw is hidden inside the joint. This gives the installed roof a smooth, uninterrupted surface with no exposed fasteners.
The core and face sheet materials are the same as any PIR sandwich panel — the distinction is purely the profile and joint geometry. In Chinese manufacturing, the term has become a generic category description used by manufacturers, contractors, and importers across the region.
Standard Specifications
| Item | Standard Specification |
|---|---|
| Core material | PIR (polyisocyanurate), density ≥42 kg/m³ |
| Core thermal conductivity | λ = 0.022 W/mK |
| Face sheet | Aluminum alloy 3003 H24 |
| Face thickness | 0.5mm (0.4mm to 0.8mm available) |
| Coating | PVDF (Kynar 500 / Hylar 5000), 25-year color stability |
| Panel width | 1,000mm effective coverage |
| Panel thickness | 50mm to 200mm |
| Panel length | Custom to order (max ~11.8m per 40HQ container) |
| Joint type | Concealed-fix tongue and groove |
| Fire rating | FM 4880 Class 1 available; rock wool core A-grade option |
Thickness and U-Value Reference
| Thickness | U-value (W/m²K) | Application |
|---|---|---|
| 50mm | 0.44 | Uncooled storage, sheds |
| 75mm | 0.30 | Workshops, non-AC warehouses |
| 100mm | 0.22 | Air-conditioned warehouses, factories (Middle East standard) |
| 150mm | 0.15 | Chiller rooms, pharmaceutical cold storage |
| 200mm | 0.11 | Blast freezers, frozen food facilities |
Why Great Wall Panels Dominate Middle East and Southeast Asia Projects
Thermal Performance in Hot Climates
Rooftop surface temperatures in Saudi Arabia and UAE routinely reach 70-80°C in summer. A 100mm Great Wall PIR panel limits heat transmission to 0.22 W/m²K — compared to an uninsulated steel sheet at approximately 5.0 W/m²K. The practical effect is a 10-15°C reduction in interior temperature and a 25-35% reduction in air conditioning load, which directly lowers operating costs over the 30+ year panel service life.
Aluminum vs Steel in Coastal Environments
Jeddah, Jubail, Dubai, and most coastal industrial zones in Vietnam and Indonesia have salt-laden air that accelerates corrosion. Galvanized steel sandwich panels require recoating within 5-8 years in these environments. PVDF-coated aluminum faces do not rust, do not require repainting, and maintain their appearance for the full service life of the structure without maintenance.
Installation Speed
The concealed-fix joint system allows a small crew to install 500-800 m² of Great Wall panels per day. The panels arrive at site cut to exact length, eliminating site cutting waste. This reduces total roofing installation time by 40-60% compared to traditional built-up roofing systems.
FOB Pricing from China
| Thickness | FOB Price (USD/m²) |
|---|---|
| 50mm PIR aluminum | 8-11 |
| 75mm PIR aluminum | 10-13 |
| 100mm PIR aluminum | 12-16 |
| 150mm PIR aluminum | 16-22 |
| 200mm PIR aluminum | 20-27 |
Minimum order: one 40HQ container (approximately 900-1,200 m² for roof panels). Prices are FOB Tianjin and vary with aluminum LME price and order specifications.
Export Documentation for Great Wall Panel Imports
- Saudi Arabia — SABER product registration required; 5% GCC import duty
- UAE / Qatar / Kuwait / Oman / Bahrain — 5% GCC duty; no SABER requirement outside Saudi
- Vietnam / Indonesia / Thailand / Malaysia — 0% duty with Form E (ACFTA)
- All markets — commercial invoice, packing list, bill of lading, CCPIT certificate of origin, material test reports; SGS pre-shipment inspection available on request
Request a Quote
GSM BuildTech manufactures Great Wall insulated aluminum roof and wall panels in Tianjin, China and exports directly to Middle East and Southeast Asia projects. Factory-direct pricing, full export documentation, 20-35 day production lead time.
Send your project area (m²), required thickness, and destination port for a 24-hour quote.
WhatsApp: +86 155 2274 6824 | Get a Quote
See also: Full roof panel range · Wall panel supply · Download spec sheet (PDF)