When it comes to specifying aluminum windows for construction projects, the National Building Specification (NBS) sets the benchmark for quality, performance, and compliance. As a leading casement window manufacturer, ALPES delivers premium aluminum casement windows that meet and exceed international standards — combining NBS-level engineering precision with competitive direct-from-factory pricing.
NBS is the UK's leading national specification system for construction products, widely recognized across the globe for its rigorous standards in performance, safety, and quality. For aluminum casement windows, NBS-compliant products must meet strict criteria in several key areas:
ALPES aluminum casement window systems are engineered with these exacting standards in mind. Every product is designed, tested, and manufactured to deliver the kind of specification-grade performance that architects, contractors, and project owners can rely on.
ALPES offers a comprehensive lineup of aluminum casement windows, each engineered with premium materials and advanced manufacturing technology. Here's an overview of the key series:
The C120 series is ALPES's flagship outward-opening casement window, designed for maximum structural performance and weather resistance. With a frame wall width of 119mm and profile thickness ranging from 1.8mm to 2.0mm using 6060-T66 grade aluminum, this series delivers exceptional wind pressure resistance and structural rigidity.
Key Performance Features:
The C113 series combines sleek aesthetics with solid performance, featuring a 113mm frame width and 57mm glass sash thickness. Built with 6060-T66 aluminum profiles and a full glue-injection process, this series offers a seamless monolithic structure that ensures long-term durability.
The C116 series is the slim-profile option in ALPES's casement window lineup, featuring a 28mm oblique press line and 22mm slim medium mullion for maximized field of vision. With a thermal K-value of 1.7 and 34mm–44mm multi-chamber insulation strips, it delivers impressive thermal performance without compromising the sleek, modern aesthetic.
One of the hallmarks of NBS-level specification is strict material quality control. ALPES uses only premium-grade materials throughout its product range:
| Component | Specification |
|---|---|
| Aluminum Profile | 6060-T66 grade, 1.8mm–2.5mm thickness (meeting/exceeding new national standards) |
| Insulation Strip | PA66GF25 polyamide, multi-chamber thermal break system |
| Hardware | ROTO (Germany), Winkhaus (Germany), CMECH, Wehag (Germany) |
| Thermal Performance | K-values as low as 1.3 (AW90 Passive Window series) |
| Color Options | Ice Cream White, Aurora Gray, Starry Sky Gray, Brown Coffee (custom matching available) |
As a China-based casement window manufacturer with global reach, ALPES offers several distinct advantages for projects requiring NBS-level quality:
Two major production centers in Foshan and Zhaoqing ensure capacity for large-scale projects with consistent quality control.
Manufacturing according to international building codes, with products exported to multiple countries worldwide.
Partnerships with ROTO, Winkhaus, CMECH, and Wehag ensure hardware quality that meets the highest European standards.
Comprehensive product line with custom configurations, competitive direct-from-factory pricing, and dedicated project support.
ALPES aluminum casement windows have been successfully deployed across a diverse range of international projects:
When specifying aluminum casement windows for projects that demand NBS-level quality and performance, ALPES stands out as a reliable aluminum casement window supplier. With premium 6060-T66 aluminum profiles, German-engineered hardware, multi-chamber thermal break systems, and a track record of international project success, ALPES delivers specification-grade windows at competitive factory-direct prices.
Whether you're working on a luxury residential development, a commercial building, or a mixed-use project, ALPES provides the technical expertise, product range, and manufacturing capacity to meet your specification requirements. Contact ALPES today to discuss your project needs and request a custom quote.
Get in touch with our technical team for custom specifications and project pricing.
Email: jennifer@alpesvip.com
WhatsApp: +86 18200804101
