OUNA Project Hurricane Impact Resistant Aluminum Sliding Windows
- Reinforced 6063-T6 Profile
- Impact Laminated Glass
- Multi-Lock System
Product Catalog
Featured OEM/ODM Fenestration Systems
High-performance architectural aluminum window & door systems manufactured to exact project blueprints.
Waterproof Double Glazed Lift & Slide Patio Glass Doors
- Heavy Duty Track System
- Thermal Break Insulation
- EPDM Weather Seal
Minimalist Arch Panel Soundproof Solid Wood & Aluminum Doors
- Acoustic Core Structure
- Ultra-Narrow Frame
- Custom Anodized Finish
Interior Aluminum Accordion Folding Partition Glass Doors
- Space-Saving Folding Mesh
- Lightweight Slim Frame
- Smooth Top Roller Rail
Exterior Waterproof Soundproof Folding Door with Fly Screen
- Integrated Insect Mesh
- High Thermal Performance
- Low Threshold Option
French Retro Black Aluminum Crittall-Style Swing Door
- Authentic Steel-Look Grid
- Double Tempered Glass
- Qualicoat Matte Black
Sayyas P120 PHI Certified Passive House Alu-Wood Windows
- Passive House Certified
- Triple Low-E Glazing
- Superior Acoustic Control
Ultra Clear Double Glazed Aluminum Sunroom Structure
- Heavy Snow/Wind Load
- Integrated Drainage Track
- Flush Floor Transitions
Architectural Engineering Overview: The Evolution of Crittall-Style Fenestration
Technical insight by Senior Architectural Specialists & Manufacturing Directors
The architectural landscape has experienced a monumental revival of industrial retro aesthetic fenestration, commonly recognized under the historical lineage of Crittall-style glazing. Characterized by slender sightlines, iconic geometric grid layouts (muntins or astragal bars), and bold black matte frames, Crittall windows originated in the late 19th century utilizing hot-rolled steel. However, contemporary commercial and high-end residential engineering has catalyzed a fundamental material shift: the transition from traditional steel to extruded thermal-break aluminum (6063-T6 alloy).
As a premier OEM/ODM OEM/ODM Aluminium Crittall Windows Factory & Supplier, Changsha Wincraft Aluminum Window Tech Co., Ltd. re-engineers this timeless aesthetic to satisfy strict 21st-century building code regulations, severe acoustic criteria, and ambitious zero-carbon thermal efficiency thresholds (such as NFRC, Passive House, and AS2047 standards).
Engineering Paradigm Shift: Hot-Rolled Steel vs. Polyamide Thermal-Break Aluminium
Historical steel windows presented notable structural drawbacks: extreme profile weight putting excessive shear stress on building structures, total vulnerability to galvanic corrosion in humid or coastal microclimates, high raw material costs, and severe thermal bridging causing condensation. Modern extruded aluminum alloy profiles overcome these hurdles through high-precision extrusion machinery and advanced thermal isolation technology.
| Performance Parameter | Traditional Hot-Rolled Steel Crittall | Wincraft Thermal-Break Aluminium Crittall | Architectural Advantage (Information Gain) |
|---|---|---|---|
| Thermal Insulation (U-Factor) | High thermal bridging (U > 3.8 W/m²K) | Low U-value (≤ 1.2 to 1.6 W/m²K) | Polyamide PA66GF25 thermal barrier breaks cold transfer, stopping internal condensation. |
| Corrosion & Weather Resistance | Prone to rust; demands frequent repainting | Qualicoat Class 2 Powder Coating | Tested to withstand >1000h salt spray test. Ideal for coastal luxury estates. |
| Structural Weight | Heavy (~7850 kg/m³ density) | Lightweight (~2700 kg/m³ density) | Reduces dead load on slabs, allowing larger opening spans & smoother hardware glide. |
| Profile Sightline Customization | Fixed die geometry, high tooling cost | Flexibility via OEM/ODM Extrusion Dies | Allows custom astragal bar profiles (15mm to 35mm sightlines) for bespoke blueprints. |
| Cost-to-Performance Ratio | Prohibitively expensive lead times & freight | 30% to 50% More Cost-Effective | Optimized manufacturing flow ensures 4-week lead times for large-scale developments. |
By implementing multi-chamber profile extrusions coupled with 24mm to 34mm glass pockets, our aluminum Crittall systems accommodate double or triple insulated glass units (IGUs) filled with 90% Argon gas, delivering acoustic damping rating up to STC 42 dB.
20,000+
Sqm Production Plant
80+
Global Export Markets
24 Hours
CAD/Rendering Turnaround
4 Weeks
Standard Order Lead Time
Factory Capabilities
OEM & ODM Customization Architecture
We partner directly with architects, general contractors, developers, and wholesale importers to build bespoke fenestration ranges.
Slender Profile Sightlines
Custom structural extrusion dies capable of achieving sightlines as thin as 15mm. Recreates authentic vintage steel aesthetics without compromising structural wind load capabilities.
Surface Finish Standards
Qualicoat Class 2 certified fluorocarbon (PVDF) and architectural powder coatings. Available in fine-texture matte black, deep bronze, metallic anodizing, and custom RAL color matching.
Acoustic & Thermal Testing
Equipped with EPDM continuous weatherstripping gaskets and multi-point lock mechanisms from top-tier brands (Siegenia, Hoppe, G-U), achieving airtightness class 4 and water resistance up to 1050 Pa.
Glazing Bar Technologies
Choose between true divided lites (TDL) with individual glass panes, or authentic simulated divided lites (SDL) using structural 3M VHB tape and interior aluminium spacer bars inside IGUs.
Integrated Insect Screens
Concealed roll-away mesh, high-clarity stainless steel security screen, or magnetic interior fly screens seamlessly engineered into the retro frame profile.
Turnkey Global Logistics
Heavy-duty protective wooden crate packaging, steel corner protectors, moisture barrier wrapping, and full container load (FCL) export clearance straight to job sites worldwide.
Factory Excellence
Precision Manufacturing & Quality Inspection Audit
Changsha Wincraft Aluminum Window Tech Co., Ltd. operates a modern 20,000+ square meter manufacturing facility outfitted with automated 5-axis CNC machining centers, precision corner-crimping machinery, and automated glass sealant lines.
Every batch of OEM/ODM aluminum Crittall windows undergoes rigorous quality assurance checking before crating:
- • Dimensional Accuracy: Verified to ±0.5mm tolerances via laser measurement.
- • Coating Thickness: Film thickness calibrated to 60-80 microns to guarantee corrosion protection.
- • Water Ingress Testing: Chamber pressure tested to simulate extreme storm conditions.
Future Procurement & Product Development Trends (2025–2030)
Predictive Market Intelligence for B2B Importers, Architects, and Developers
The global demand for industrial steel-look glass fenestration is undergoing rapid modernization. B2B buyers must align their procurement strategies with four key emerging industry trends over the next decade:
1. Decarbonization & Low-Carbon Aluminium Billets
Global environmental regulations (such as the EU Carbon Border Adjustment Mechanism - CBAM) are compelling developers to quantify embodied carbon. Future-proof procurement requires aluminum profiles extruded using renewable energy (hydro-powered aluminum billets) or certified recycled content (>75% recycled aluminum), drastically slashing the building's carbon footprint without sacrificing tensile strength.
2. Smart Dynamic Glazing Integration (PDLC / Electrochromic)
The integration of switchable privacy glass (PDLC) inside double-glazed Crittall window panels is fast replacing traditional window blinds in high-end office boardrooms and master bathroom suites. With the click of a button or smart home command, the retro-grid glass transitions from crystal-clear to opaque in milliseconds.
3. Ultrathin Structural Silicone Glazing (SSG)
Advancements in high-modulus structural silicones allow manufacturers to eliminate exterior aluminum retaining beads entirely on certain Crittall series. This creates a smooth, flush glass exterior while retaining decorative interior grids, maximizing solar gain while meeting sleek modern architectural standards.
4. Unitized Modular Bifold & Pocket Wall Systems
Instead of single traditional swing doors, international buyers are requesting large-span bifolding and multi-slide pocket door configurations featuring Crittall grid layouts. These systems allow full wall elevations (up to 12 meters wide) to fold away cleanly into wall cavities, blurring the boundary between indoor luxury and outdoor living spaces.
Manufacturing Rigor
Inside Our Factory Facilities
Transparent production lines, advanced machinery, and rigorous craftsmanship.
Buyer Guidance
Frequently Asked B2B Procurement Questions
Clear, authoritative engineering answers for project managers and procurement officers.
Do you accept OEM and ODM orders for custom aluminum Crittall windows?
Yes. We provide end-to-end OEM and ODM services. We can custom-extrude exclusive aluminum profiles based on your CAD/BIM drawings, apply private label branding, fabricate custom astragal bar configurations, and design specialized export packaging to match your brand requirements.
What is the standard production lead time for customized project orders?
Standard custom project orders take approximately 4 weeks from shop drawing sign-off and deposit receipt. For large-scale commercial developments, we establish phased container delivery schedules coordinated with your job site construction milestones.
Can Wincraft provide technical CAD drawings and 3D renderings before production?
Absolutely. Our dedicated architectural engineering team reviews your elevation drawings and window schedules to deliver initial 24-hour design proposals, followed by comprehensive shop drawings (detailing mullion connections, glass specs, anchors, and drainage) for engineering sign-off.
How do aluminum Crittall-style windows compare to genuine steel windows in price and performance?
Aluminum Crittall windows are approximately 30% to 50% more cost-effective than steel windows while offering far superior thermal insulation (thanks to polyamide thermal breaks). They are lightweight, completely immune to rust, and offer greater flexibility in hardware integration and surface finishes.
What glass configurations can be integrated into your slim aluminum Crittall frames?
We configure double and triple insulated glass units (IGUs), laminated hurricane impact glass, soundproof acoustic PVB interlayers, low-emissivity (Low-E) solar control glass, switchable smart glass, and decorative obscure/fluted glass. Glass thickness ranges from 5mm single tempered up to 38mm triple-glazed IGUs.
Can your window and door systems comply with local building codes in my country?
Yes. Our engineering team routinely designs systems to satisfy specific international building codes, including North American NFRC/AAMA specs, European CE standards, and Australian AS2047 standard wind/water pressure tests. Share your design wind load (Pa) and target U-value requirements with us during inquiry.
How are fragile glass products packaged for safe international ocean transport?
We utilize export-standard fully enclosed fumigated plywood crates. Each glass panel is protected with foam spacers, corner protectors, and shrink-wrapped moisture barriers. Crates are custom-built to container dimensions, strapped securely to prevent movement during sea freight.
What is your Minimum Order Quantity (MOQ) for custom profile colors or extrusions?
For standard architectural colors (such as Matte Black RAL 9005 or Charcoal), we have no rigid minimum order requirements—we accommodate single custom villa orders. For non-standard custom profile extrusion dies, our MOQ starts at 300 kg of profile weight, with die tooling fees credited back upon reaching threshold order volumes.