Landsharp Aluminum Single Double Hung Window Sliding Sash Triple Glazed Windows

Product Specifications

Engineering Advantages

1. PIN GLUE INJECTION PROCESS Fills the gap between the aluminum profile and corner code for enhanced structural integrity.

2. Multi Cavity Insulation Strip PA66 high thermal insulation strip is utilized to completely block the heat conduction path of the profile.

3. Concealed Drainage Design Eliminates visual clutter and prevents rainwater backflow during storms.

High Strength Profile & Strict Production Process

The structural design is firm, and the wind pressure strength is far superior to plastic steel windows and standard aluminum alloy windows. Capable of withstanding extreme wind pressure, it ensures the utmost safety performance of doors and windows during severe storm conditions—especially ideal for coastal regions and high-wind environments.

Four-Side Compression Sealing Design

High-quality Sash windows feature a comprehensive four-side compression sealing system. When the window sash is closed, it is firmly pressed against the perimeter sealing strips on the frame. Compared to conventional sash windows relying on lateral wool strips, this mechanism offers superior air and water tightness, dramatically reducing air and rainwater infiltration while improving thermal insulation and wind resistance.

Rigorous Laboratory Testing

A severe temperature difference environment ranging from -30°C to +70°C is simulated in an artificial climate chamber, continuously monitoring heat flow dynamics and surface temperature stability.

Simulation of a Category 12 typhoon (wind speed ≥ 32 m/s) coupled with heavy storm rain (flood volume ≥ 4 L/m²·min) in a specialized wind tunnel laboratory.

Thermal insulation to reduce heat conduction: The use of thermal insulation broken bridge aluminum alloy profiles effectively restricts heat transfer through windows and doors, maintaining an indoor climate that is warm in winter and cool in summer.

Energy saving: In winter, insulated frames reduce thermal loss through window frames by up to 1/3. In summer, they substantially decrease cooling energy loss, lowering operational costs and supporting energy conservation initiatives.

U Value < 2.2 W/(m²·K)

Three-layer insulating Low-E glass combined with integral welding technology reinforces corner joints, dramatically reducing heat dissipation along frame seams.

Corrosion resistance: Passed the rigorous 240-hour neutral salt spray test, ensuring suitability for high-humidity and marine coastal applications.

Weather resistance: Subjected to 4,000 hours of QUV accelerated aging testing, achieving a gloss retention rate above 90%. Color stability far exceeds conventional paint coatings, with no fading or yellowing for 5–10 years.

International Quality Standards & Certifications

Fully compliant with AS2047 (Australian window performance standard), UL (American product safety certification), ISO9001 (International quality management system certification), and NFRC (American fenestration energy rating council standard) to satisfy stringent global regulatory frameworks.

Project Cases & Global Exhibition

These Landsharp projects demonstrate our strong market presence and proven engineering capabilities in domestic and international architectural markets.

We are not only manufacturers but also active participants in the global building materials industry. Our presence is frequently seen at leading international exhibitions, including the National Building Materials Exhibition in the United States and Australia's Designbuild. By engaging directly with end markets, we continuously gain insights into the distinct requirements of customers in North America and Australia regarding energy efficiency, safety, and design aesthetics, ensuring our products comply with prevailing world-class standards.

Frequently Asked Questions (FAQ)