Explore our precision-engineered, customizable architectural glazing systems manufactured to exact project specifications for luxury residential, commercial, and hospitality developments.
Understanding the structural, thermal, and economic parameters governing modern metal-framed glazing in high-end architectural procurement.
The iconic Crittall style—characterized by sloped steel glazing bars, slim sightlines, and geometric grid partitions—has defined luxury residential, industrial retrofit, and high-end commercial architecture for over a century. However, as global building energy codes tighten under international frameworks like the EU Energy Performance of Buildings Directive (EPBD) and ASHRAE 90.1, traditional uninsulated hot-rolled steel Crittall systems face major performance limitations regarding thermal bridging, condensation risk, and prohibitive structural weight.
As a leading China OEM/ODM manufacturer headquartered in Foshan, Window Wurx Industry Co., Ltd. has spearheaded the structural evolution from classic steel to precision-engineered 6063-T6 architectural aluminium alloy Crittall doors. By combining ultra-narrow sightlines with advanced Technoform PA66 polyamide thermal breaks and multi-chamber extruded profiles, modern aluminium Crittall doors achieve an optimal balance between historic industrial design and modern energy standards.
| Performance Characteristic | Traditional Hot-Rolled Steel Crittall | Window Wurx OEM Aluminium Crittall System | Architectural Advantage |
|---|---|---|---|
| Thermal Conductivity (U-Value) | Single Glazed: 5.0 - 5.8 W/m²K (Severe Thermal Bridging) | Thermal Break Double/Triple Glazed: 1.1 - 1.6 W/m²K | 70%+ reduction in heat loss; full compliance with strict energy codes. |
| Frame Weight & Floor Load | 7,850 kg/m³ (Heavy floor loading; structural reinforcement needed) | 2,700 kg/m³ (65% lighter structural weight) | Simpler structural design, easier handling, smoother hardware operation. |
| Corrosion Resistance & Coating | Requires periodic rust treatment; prone to edge oxidation | Qualicoat Class 2 Powder Coat / Anodized Finish (Salt Spray >2000 hrs) | Zero rust, minimal maintenance even in coastal environments (C4/C5 grade). |
| Design Flexibility & Two-Tone | Single color wet paint; limited dual-color execution | Custom Dual-Color Extrusions (e.g., Matt Black Exterior / Warm Oak Interior) | Seamless harmony with exterior building facades and interior design palettes. |
| Acoustic Insulation (STC Rating) | STC 22 - 26 dB (Single pane glass) | STC 38 - 44 dB (Acoustic Laminated & Argon-Filled IGUs) | Superior noise isolation for urban apartments, boardrooms, and suites. |
| Procurement Lead Time & Cost | High fabrication cost; extended manual forge lead times | Automated CNC machining lines; 30-40% lower cost structure | Faster project turnarounds and enhanced ROI for commercial developers. |
Utilizing 6063-T6 T66 temper aluminum extrusions allows for vertical mullion widths as narrow as 15mm to 30mm, replicating authentic steel profile proportions while offering vastly increased structural deflection resistance against wind loads up to 4.5 kPa.
High-precision 24mm to 34mm glass-fiber reinforced polyamide (PA66-GF25) strips thermally decouple the exterior aluminum frame from the interior profile, completely eliminating condensation formation and thermal transfer.
Available in true divided lites (TDL) or applied decorative glazing bars (SDL) with spacer bars inside the insulated glass unit (IGU), offering authentic aesthetic detailing customized to exact CAD drawings.
Key developments shaping international specification for Crittall-style aluminium doors and window hardware.
Increasing demand for single-touch switchable PDLC (Polymer Dispersed Liquid Crystal) privacy glass built inside Crittall partition grids. This allows executive offices and luxury master suites to transition instantly from full visual transparency to frosted opacity.
Architects are heavily prioritizing universal accessibility (ADA compliance) and seamless indoor-outdoor living. Modern OEM aluminium Crittall sliding and pocket doors incorporate concealed sub-floor drainage tracks with completely flush transitions.
Major developers across Europe, North America, and Australia now require Environmental Product Declarations (EPDs). Procurement strategies are shifting toward aluminum extruded from green hydro-powered smelters with over 75% recycled content.
Located in Foshan—China’s premier aluminum manufacturing hub—Window Wurx provides comprehensive engineering, OEM customization, and factory-direct pricing for overseas buyers.
Custom profiles, bespoke glazing bars, customized hardware branding, and multi-angle shop drawing generation based on architectural CAD/BIM specifications.
Fully tested systems compliant with European CE standard EN14351-1, Australian AS2047 / AS1288 structural standards, and North American NFRC thermal metrics.
Every door is individual shrink-wrapped, corner-protected, cushioned with polyethylene foam, and packed inside heavy fumigation-free wooden crates for transit safety.
Offering direct supply for regional distributors, general contractors, and door dealers—more affordable and adaptable than rigid commercial franchising models.
Comprehensive technical answers for architects, project managers, and international importers evaluating aluminum Crittall door systems.
Acoustic dampening in our aluminum Crittall doors is achieved through a multi-layered engineering approach. First, we utilize asymmetric double or triple glazing configurations (such as 6mm outer glass + 12mm Argon space + 8.38mm acoustic laminated inner glass) which disrupts sound waves across varying frequencies. Second, our profiles incorporate continuous double or triple EPDM weather-stripping gaskets along all sash perimeters. When paired with multi-point compression locking hardware, our systems achieve sound transmission class (STC) ratings between 38 dB and 44 dB, ideal for urban residences and commercial conference rooms.
Yes. Because our thermal break aluminum profiles consist of separate inner and outer aluminum extrusions joined by a polyamide thermal strip, we can apply different surface finishes to each side prior to assembly. For example, you can specify an architectural Matt Jet Black (RAL 9005) powder coat for the exterior facade to maintain authentic Crittall aesthetics, while selecting a custom white, bronze, or realistic woodgrain anodized finish for the interior frame to harmonize with internal decor.
Window Wurx Industry Co., Ltd. products are engineered and tested to comply with major international building codes. Our window and door systems carry CE certification under EN 14351-1 for European distribution, and have undergone rigorous physical testing to Australian standard AS2047 (covering structural deflection, air infiltration, water penetration resistance, and ultimate strength) and AS1288 glass safety regulations. All glass units feature toughened safety glass conforming to BS EN 12150 and ANSI Z97.1.
True Divided Lites (TDL) use individual glass panes framed by structural aluminum mullions within each grid section. While highly authentic, TDL increases structural weight and thermal edge-effects. Simulated Divided Lites (SDL) feature a single large double-glazed insulated unit with precision-milled aluminum decorative glazing bars mounted externally to the glass surfaces (paired with internal warm-edge duplex spacer bars inside the glass unit). SDL delivers identical classic Crittall visuals while providing vastly superior thermal insulation, structural integrity, and easier glass replacement.
International freight protection is central to our quality assurance standard. Every complete door and frame assembly undergoes a 5-layer export packaging protocol: 1) Protective anti-scratch film on aluminum profiles; 2) Corner guard protectors; 3) Shock-absorbing EPE foam wrapping; 4) Waterproof heavy-duty poly-wrap; 5) Full enclosure inside custom fumigation-free plywood crates with internal bracing. Additionally, desiccants are packed inside crates to absorb container moisture during ocean transit.
Upon receipt of project drawings, our engineering team produces detailed 2D/3D shop drawings within 48 to 72 hours. Once shop drawings and finish samples are approved in writing by the client, standard manufacturing lead time is 25 to 35 calendar days. For complex custom extruded profiles or specialized glass specifications (e.g., curved glass or switchable smart glass), lead time is typically 35 to 45 days. Rapid expedited production is available for high-volume commercial contracts across our 3 automated production lines.
Unlike rigid commercial franchise systems, Window Wurx offers flexible B2B distributor and OEM partner models. We back our global trade partners with factory-direct pricing, custom branded product catalogs, physical sample kits (aluminum profiles, corner sections, glass mock-ups, hardware options), complete engineering calculations, and step-by-step installation manuals or video guides for field teams.
Submit your architectural elevation drawings, window schedules, or custom OEM specifications directly to our engineering department in Foshan, China.