Shandong Duoping New Materials Co., Ltd. is a professional R&D, production and supplier of high-quality thermal break windows. Relying on core thermal break technology, we combine aluminum alloy frames with high-efficiency thermal insulation structures to create door and window products featuring both the robust performance of aluminum alloy and superior thermal insulation. Widely adaptable to residential, office building, apartment and other scenarios in different climate zones across northern and southern China, our products have gained market recognition for their energy efficiency, durability and comfort. We sincerely look forward to working with you to provide energy-saving door and window solutions adaptable to all climates.
|
Parameter Category |
Specific Index |
Reference Value |
Testing Standard |
|
Frame Material |
Thermal break structure & thermal strip parameters |
6063-T5 aluminum alloy + PA66GF25 thermal strip (width ≥24mm) |
GB/T 5237, GB/T 23615 |
|
Glass Configuration |
Energy-saving glass parameters |
Low-E insulated tempered glass 5+20A+5mm (argon-filled, double-silver optional) |
GB 15763.2, GB/T 2680 |
|
Core Performance |
Heat transfer coefficient / Air tightness grade |
≤1.6 W/(㎡·K) / Grade 6 air tightness |
GB/T 8484, GB/T 7106 |
|
Structural Performance |
Sound insulation / Service life |
≥40dB / ≥22 years service life |
GB/T 50121, GB/T 5271 |
Strict quality control is implemented throughout the production process. Aluminum alloy profiles are precisely CNC-cut and corner-assembled, adopting a dual reinforcement process of corner codes + corner assembly adhesive for tight and stable splicing. Thermal strips are made of PA66GF25 reinforced nylon material, tightly combined with aluminum alloy profiles through the strip-penetrating process with no risk of loosening. The thermal strip width is ≥24mm to ensure thermal insulation effect. The frame surface can be treated with powder coating or fluorocarbon spraying to enhance weather resistance and aesthetics.
EPDM multi-layer sealing strips are used at the connection between glass and frame, paired with argon-filled insulated layer technology to strengthen thermal insulation and sound insulation performance. Hardware accessories are high-quality stainless steel or aluminum alloy types, with strong load-bearing capacity and smooth opening, adapting to the stress requirements of the thermal break structure. The drainage system adopts a hidden design with anti-backflow devices to ensure smooth drainage and reliable waterproofing.
The core advantage of thermal break windows lies in the superior energy-saving effect of the thermal break structure. The PA66GF25 high-strength thermal strip divides the aluminum alloy frame into inner and outer parts, blocking the heat conduction path. Paired with Low-E insulated glass, the heat transfer coefficient is as low as 1.6, improving energy efficiency by more than 50% compared with ordinary aluminum alloy windows. Meanwhile, it retains the robustness, deformation resistance and weather resistance of aluminum alloy frames, and features multi-layer sealing structures for sound insulation, waterproofing and dustproofing.
Suitable for different climate zones nationwide, thermal break windows effectively block indoor heat loss in cold northern regions and outdoor high-temperature ingress in hot southern regions. Widely used in residential homes, high-end apartments, office buildings, hotels and other scenarios, they are especially ideal for spaces with high demands for energy efficiency and sound insulation, making them the preferred door and window product for green buildings.

· Superior Energy Efficiency : PA66 thermal strip + Low-E insulated glass, heat transfer coefficient ≤1.6, significantly reducing air conditioning and heating energy consumption.
· Thermal & Sound Insulation : Thermal break structure blocks heat conduction; multi-layer sealing + insulated glass, sound insulation ≥40dB, creating a quiet and constant-temperature environment.
· Robust & Durable : Aluminum alloy frame + PA66 thermal strip, strong deformation and wind resistance, service life of more than 22 years.
· All-Climate Adaptability : Suitable for cold northern and hot southern regions, effectively alleviating discomfort caused by indoor-outdoor temperature differences.
· Eco-Friendly & Stable : PA66 thermal strip is high and low temperature resistant, formaldehyde-free, complying with green building material standards.
Thermal break windows differ significantly from ordinary aluminum alloy windows and plastic steel windows in energy-saving performance, as detailed below:
|
Comparison Item |
Thermal Break Windows |
Ordinary Aluminum Alloy Windows |
Plastic Steel Windows |
|
Heat Transfer Coefficient (U-value) |
≤1.6 W/(㎡·K), excellent energy efficiency |
≥3.0 W/(㎡·K), poor energy efficiency |
≈2.5 W/(㎡·K), good energy efficiency |
|
Sound Insulation Effect |
≥40dB, blocks traffic and crowd noise |
≤30dB, poor sound insulation |
≈35dB, good sound insulation |
|
Deformation Resistance |
Excellent, aluminum alloy frame + thermal strip, not easily deformed at high temperatures |
Excellent, metal material, strong deformation resistance |
Good, steel lining support, average deformation resistance |
The overall structure adopts a "aluminum alloy frame + PA66 thermal strip + Low-E insulated tempered glass" thermal break design. The thermal strip divides the aluminum alloy frame into indoor and outdoor parts, effectively blocking heat conduction. Built-in reinforcing ribs in the frame enhance overall load-bearing and wind resistance. The frame-sash connection adopts a stepped multi-layer sealing structure with EPDM sealing strips to strengthen air and water tightness. The argon-filled insulated layer further improves thermal insulation performance.
In terms of design, it supports opening methods such as casement, inward opening and inward tilting, and sliding. Glass options include single-silver/double-silver Low-E, laminated glass, etc., to meet different energy-saving and safety requirements. Frame colors can be customized via powder or fluorocarbon spraying to adapt to various decoration styles. Hardware accessories can be ordinary or smart types, and some models support micro-ventilation functions, balancing energy efficiency and ventilation needs. The overall structure is simple and elegant, combining performance and aesthetics.
After installation, check the fit between thermal strips and aluminum alloy frames, hardware firmness and sealing strip integrity to avoid loose thermal strips affecting energy-saving effects;
For daily cleaning, wipe with a soft cloth and neutral detergent. Do not use sharp objects to scratch frame coatings or glass coating layers;
Avoid strong impacts on the frame to prevent aluminum alloy deformation and thermal strip breakage, which may affect thermal insulation and structural stability;
Regularly (every six months) check sealing strips and hardware accessories. If aging or jamming occurs, replace them in a timely manner to ensure sealing and smooth opening;
In winter, avoid rinsing glass with hot water to prevent glass breakage caused by excessive temperature differences, which may affect energy-saving effects.
Q: Are the thermal strips of thermal break windows prone to aging and falling off?
A: Not easily. Adopting PA66GF25 reinforced nylon thermal strips that are high and low temperature resistant and aging resistant, tightly combined with aluminum alloy through the strip-penetrating process. They can maintain stable performance for more than 22 years under normal use without falling off.
Q: How much more expensive are thermal break windows than ordinary aluminum alloy windows?
A: The price is about 1.5-2 times that of ordinary aluminum alloy windows. Due to the addition of PA66 thermal strips and high-end glass configurations, their energy efficiency is improved by more than 50%, saving a lot of electricity bills in long-term use, resulting in higher comprehensive cost performance.
The company provides one-stop thermal break window customization services, supporting full-dimensional customization of opening methods, sizes, glass types, frame colors, thermal strip widths and hardware accessories. We provide exclusive energy-saving solutions based on the needs of different climate zones, including free on-site measurement, effect preview and technical disclosure services.
Bulk procurement enjoys exclusive engineering discounts. Logistics adopts shock-proof packaging with door-to-door delivery nationwide. After-sales service provides a 3-year warranty. During the warranty period, non-human damage can be repaired and parts replaced free of charge. Lifetime technical consultation and accessory supply services are provided.