Factory Inventory & Custom Engineering
Featured Architectural Systems & Enclosure Ensembles
Explore our precision-engineered window and exterior architectural fenestration solutions. Engineered in our 180,000㎡ industrial facility for structural reliability and thermal resilience.
Engineering Specifications & Structural Mechanics
Precision OEM/ODM Aluminium Bay Window Manufacturing Architecture
Aluminium bay windows represent one of the most mechanically demanding segments within structural fenestration. Unlike flat curtain walls or standard ribbon sliding windows, a bay window unit projects outward from the main building envelope, creating a three-dimensional polygon typically comprising a central fixed pane flanked by flanking casements at 30-degree, 45-degree, or 90-degree polygonal configurations. For commercial developers, general contractors, and facade consultants, executing these projecting projections requires exact structural calculation to resolve dead loads, wind shear loads, and thermal dissipation paths across cantilevered perimeters.
As a Tier-1 OEM/ODM manufacturing facility operating out of Foshan, Guangdong—the epicentre of global architectural aluminium fabrication—our engineering approach treats bay window assemblies as integrated cantilevered load-bearing systems. Each junction mullion is designed with heavy-duty structural chambers extruded from primary virgin billet 6063-T6 or 6061-T6 architectural aluminium alloy. The dynamic interaction between flanking casements and central fixed glazing requires continuous reinforced variable-angle couplers that eliminate torsional deflection under extreme positive and negative air pressure conditions.
180,000㎡
Integrated Production Hub
600+
Skilled Fabricators & Engineers
AS2047 N6
Certified Wind Load Rating
100+
Patents & Global Standards
Comparative Fenestration Architecture: Bay Window Structural Grades
When specifying aluminium bay windows for large-scale multi-unit developments or coastal luxury estates, procurement teams must balance thermal insulation, perimeter wind deflection, and long-term acoustic mitigation. Below is the technical performance baseline deployed across our custom OEM/ODM production lines:
| Engineering Attribute | Standard Commercial Grade | DERCHI Heavy-Duty Thermal Break (Custom OEM) | High-Velocity Hurricane Impact Grade |
|---|---|---|---|
| Alloy Composition & Temper | Recycled 6063-T5 (1.4mm profile) | Virgin Billet 6063-T6 (2.0mm - 3.0mm profile) | Primary Structural 6061-T6 (3.2mm+ profile) |
| Thermal Insulation Tech | PVC Solid Interlock (Non-broken) | Polyamide PA66 GF25 Iso-bars (24mm - 34mm) | Multi-chamber PA66 GF25 + Aerogel Inserts |
| Overall Thermal Transmittance (U-Factor) | Uf > 3.8 W/m²·K | Uf 1.3 - 1.8 W/m²·K (Passive House compliant) | Uf 1.1 - 1.5 W/m²·K |
| Corner Junction Mullion Type | Single-screw mechanical joint | Reinforced Variable Angle Heavy-Duty Cast Flange | Interlocking Structural Steel Spine Reinforced |
| Glazing Pocket Specification | Single / Double (Up to 24mm) | Double / Triple Laminated Low-E (Up to 48mm) | Multi-layer SentryGlas® (SG) Laminated (Up to 52mm) |
| Design Wind Load (Pa) | 1500 Pa (Serviceability) | 3500 Pa to 4500 Pa (AS2047 / ASTM E330) | Exceeds 5000 Pa (Miami-Dade / TAS 201/202/203) |
Market Dynamics & Strategic Procurement
Future Procurement Trends in Aluminium Bay Window Assemblies (2025–2030)
The global procurement market for architectural bay windows is undergoing rapid transformation driven by carbon neutrality mandates, parametric architectural trends, and regional building envelope certifications. Key shifts commercial buyers must anticipate include:
1. Pre-Engineered Unitized Modular Assembly
Traditional stick-built bay windows assembled on construction sites present elevated water infiltration risks at the junction mullions. Commercial procurement is shifting rapidly toward fully unitized bay pods fabricated, sealed, and glazed inside the factory under strict ISO9001 environmental conditions before export delivery.
2. Ultra-Narrow Sightline Polygonal Frameworks
Modern luxury architectural styles demand maximum glass-to-frame ratios. Advanced procurement specifications mandate profile face widths under 45mm while preserving high moment-of-inertia values through internal structural webbing and hidden exterior structural silicone glazing (SSG).
3. Extreme Coastal & Climate Resilient Finishes
Coastal developments across Florida, the Caribbean, South America, and Australasia demand surface coatings impervious to high-salinity air. Procurement directives now insist on Qualicoat Class 2/3 powder coatings or 70% fluorocarbon PVDF finishes backed by salt spray testing exceeding 4,000 continuous hours.
R&D and Mechanical Horizons
Technological Development Horizons: Next-Generation Bay Window Engineering
In response to tighter building energy regulations such as Europe's EPBD, the US ASHRAE 90.1, and Australia's NCC Section J, our research and engineering divisions have developed proprietary corner mullion isolation matrices. The greatest vulnerability in a conventional aluminium bay window is the thermal bridge created at the intersection point where multiple sash frames meet. If left unmitigated, condensation forms across the interior metal perimeter during winter cycles, accelerating degradation of adjacent internal drywall and subflooring.
Our solution incorporates continuous multi-cellular isometric thermal breaks co-extruded with integrated cellular sponge gaskets (EPDM foam). By filling the internal hollow structural chambers of the bay corner connector with expanding polyisocyanurate (PIR) cores, internal convection currents are neutralized. Furthermore, to accommodate shifting dynamic foundation settlement, our variable-angle corner couplings incorporate hidden elastomeric shear-keys that absorb up to 6mm of inter-story drift without transferring torsional strain to the insulated glass units (IGU), eliminating spontaneous edge seal failure.
Integrated Industrial Capability
Why Global Importers Partner with Our Manufacturing Base
Operating from Foshan, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) combines over 25 years of specialized OEM/ODM excellence with full supply chain integration.
25+ Years of Proven Manufacturing Heritage
Founded on rigorous German precision tooling standards, our dedicated production teams have supplied architectural projects across North America, South America, Europe, Australia, and the Middle East.
Certified Global Code Compliance
Our fenestration assemblies pass the world's most stringent testing regimes, including CE, ISO9001, Australian AS2047 N6 structural benchmarks, and UL fire-rating verifications with full test documentation.
100% Free CAD & BIM Shop Drawings
Avoid field measurement discrepancies. Our in-house engineering squad drafts complete structural CAD elevation packages, anchoring calculation models, and 3D mockups for architect review prior to profile cutting.
Full Project Consolidation Logistics
Consolidate your complete architectural opening package—aluminium bay windows, grand pivot doors, security screens, and garage systems—in unified export-crated shipping containers to optimize sea freight.
Equip Your Project with Direct Factory Supply
Direct quotation, structural shop drawings, and full test certificates tailored to your local building jurisdiction within 24 hours.
Procurement Clarity
Frequently Asked Questions for B2B Importers & Developers
Technical, logistical, and warranty responses addressing common engineering and purchasing inquiries for OEM/ODM aluminium bay window production.
What structural provisions prevent cantilever sagging in large-span aluminium bay windows? +
Because a bay window projects outside the perimeter bearing wall, cantilever deflection is the primary failure point if unsupported. Our OEM/ODM configurations utilize continuous structural tie-rods anchored upward into the overhead floor header or heavy-gauge steel cantilevers integrated into the sub-sill extrusion. Additionally, our patented corner mullion extrusions feature reinforced internal vertical webs that resist localized buckling and transfer total dead weight evenly back to the main building frame.
How do you resolve thermal bridge condensation at 30°, 45°, and 90° corner mullions? +
Traditional aluminium bay corner connections join separate frames via uninsulated aluminium couplers, creating a continuous thermal leak. DERCHI designs feature segmented, multi-chambered corner extrusions fitted with proprietary PA66 GF25 polyamide thermal barriers. The interior metal envelope is completely isolated from the exterior metal surface by an unbroken 24mm to 34mm non-conductive barrier, maintaining interior frame temperatures above the dew point even when external conditions drop to -20°C.
Can your factory customize bay window openings to exact non-standard architectural angles? +
Yes. Beyond standard 30°, 45°, and 90° bay configurations, our computerized CNC tooling centers fabricate variable-radius circular bow windows and asymmetrical multi-faceted bay assemblies. Once your design team submits architectural opening parameters, our engineering office returns shop drawings with exact angular cuts, gasket interlocking profiles, and sill flashing details for formal sign-off.
What packaging and containerization measures safeguard multi-angle bay frames during ocean transit? +
As an export-dedicated Chinese manufacturer delivering across South America, Australia, North America, and Europe, our crating systems are designed for high-seas vibration and multi-port handling. Each window frame undergoes non-residue PE protective taping, triple-layer EPE foam wrapping, and edge-corner corner guards before being secured inside ISPM-15 compliant fully enclosed fumigated wooden crates with integrated steel lifting lugs.
What quality certifications and building code standards are your products rated against? +
Our aluminium door and window configurations hold accredited CE certifications (EN 14351-1), ISO9001 management certification, and Australia AS2047 N6 wind resistance standards (verified up to 4500Pa). For coastal projects in extreme typhoon or hurricane zones, custom laminated units can be certified against ASTM E1886/E1996 missile impact and cyclic pressure standards.
What is the minimum order quantity (MOQ) and expected production lead time for OEM projects? +
We support both commercial bulk developments and bespoke luxury private estates. Typical OEM project lead time is 25 to 35 working days following final CAD shop drawing confirmation and color sample approval. For multi-container commercial tenders, staged production schedules are developed with locked shipping milestones to synchronize directly with your on-site installation schedules.