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Energy-saving System Windows
Modern construction demands solutions that balance thermal performance with architectural freedom. Our selection features Aluminum Alloy System Windows built for structural strength and slim sightlines, while Integrated System Windows unify frame, glass, and shading into a single pre-engineered unit. For projects requiring refined aesthetics without compromising insulation, Premium System Windows offer bespoke finishes and multi-chamber profiles. Where automation meets ecology, Smart System Windows respond to sunlight and indoor climate in real time. Each series contributes to a tighter building envelope and lower annual energy consumption.
Energy-saving System Windows are engineered around the principle that glass and frame must work as one thermal barrier. The core profile uses polyamide strips with a minimum 34 mm insulation zone, eliminating cold bridging even at corner joints. Triple-pane glazing is argon-filled and suspended in a warm-edge spacer system, pushing center-of-glass U-values down to 0.70 W/m²K. Meanwhile, silicone-free EPDM gaskets seal against wind-driven rain while allowing the structure to breathe. Below are the key performance indicators and material specifications that define this product line.
- Frame depth: 85 mm with three continuous insulation chambers
- Thermal break width: 44 mm reinforced with 25% glass-fiber polyamide
- Glazing: triple 4 mm low-E coated glass/16 mm argon/4 mm/16 mm argon/4 mm
- Standard Uw value: 0.82 W/m²K (tested at 1230 x 1480 mm)
- Solar Heat Gain Coefficient (SHGC): 0.42 with clear low-E coating
- Air tightness: Class 4 according to EN 12207
- Water tightness: E1050 (1050 Pa) according to EN 12208
- Acoustic performance: Rw up to 44 dB with laminated inner pane
- Hardware compatibility: tilt-turn, parallel-sliding, and automated actuators
| Parameter | Standard Configuration | High-Performance Option |
|---|---|---|
| Uw (fixed window) | 0.95 W/m²K | 0.68 W/m²K |
| Uw (tilt-turn window) | 0.87 W/m²K | 0.72 W/m²K |
| G-value | 0.38 | 0.45 with spectrally selective coating |
| Light transmittance | 58% | 63% |
| Frame thermal expansion | ≤ 0.024 mm/m·K for aluminum alloy profiles | |
| Surface treatment | Powder coat (60-80 µm) | Anodized (20 µm) or PVDF (35 µm) |
| Wind load resistance | Class C5 (2000 Pa) | Class C6 (2500 Pa) with larger reinforcements |
| Opening force (EN 13115) | Class 2 (≤ 100 N) | Motorized below 0.5 N·m torque |
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Huizhou-style Pavilions
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Coated Glass
Duoping, a professional manufacturer and supplier, guarantees high quality of its coated glass with strict production control. It adopts advanced processes like vacuum sputtering and chemical deposition, plus secondary tempering to enhance performance. We offer customized services and strict quality checks, ensuring it resists harsh environments for long-term use.
Energy-efficient Windows
Duoping is a leader in the research, development, and supply of high-performance energy-efficient windows. With years of experience in the window and building materials industry, we specialize in providing products that combine advanced insulated glass and thermal sealing technologies to ensure excellent insulation, low energy consumption, and durability. Our energy-efficient windows are designed for various applications, including residential homes, office buildings, hotels, and more. We have successfully established a market presence both domestically and internationally and look forward to becoming your trusted partner for high-quality energy-efficient windows in China.
Low-E Glass
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