Explore our factory-direct precision fenestration systems manufactured under ISO9001 quality matrices. Each unit undergoes full mechanical deflection testing, corner joinery air-tightness verification, and acoustic optimization before overseas crating.
Engineered gas-strut counter-balanced vertical fold-up fenestration designed for luxury kitchen-to-patio transitions, high-volume hospitality bars, and extended bay configurations with seamless unobstructed views.
Equipped with European standard multi-point perimeter compression gear, high-grade polyamide PA66 thermal barriers, and precision-mitered mechanically crimped corners for supreme load tolerance in architectural bay combinations.
Designed for premium detached villas requiring ultra-low U-values (Uw ≤ 1.1 W/m²·K). Includes 304 marine-grade diamond mesh security screens and warm-edge spacer warm-air barrier isolation.
Engineered to comply strictly with North American NFRC and AAMA rating schedules. Incorporates structural composite corner mullions for 30°, 45°, and 90° box bay assemblies with high wind-load ratings.
Certified for the rigorous climatic zones of Australia and Oceania. Tested against cyclonic wind gusts, solar UV degradation, and positive-negative pressure water intrusion up to 600 Pa.
Features multi-point compression gaskets alongside acoustic PVB laminated insulating glass units (IGU), delivering field noise attenuation of up to 42 dB in dense urban environments.
Combines panoramic structural glass center picture units with flanker venting casements. Thermal bridging is completely decoupled via extruded 6063-T6 engineered profiles and polyamide thermal struts.
Designed for residential developers requiring factory-direct scaling. Equipped with anti-burglar mushroom cam lock pins, concealed multi-link friction hinges, and stainless steel protective insect barriers.
Backed by Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) with over 25 years of specialized fenestration manufacturing in Foshan, China. We bridge European precision engineering with industrialized Chinese production power.
Located in Nanhai District, Foshan, our intelligent smart-factory integrates CNC 5-axis extrusion milling centers, automated glass cutting and argon gas filling lines, and automated packaging robots ensuring precise ±0.5mm structural tolerances.
Every architectural window series has undergone physical testing verified by international laboratories: NFRC (USA), AS2047 (Australia), CE EN14351-1 (Europe), ISO9001, and UL fire standards, with over 30 independent appearance and utility model patents.
Our team of 40+ structural and façade engineers provides project-specific shop drawings, structural wind-load finite element analysis (FEA), thermal condensation risk modeling, and full 3D BIM integration for international tender documentation.
Sourcing architectural windows from China has shifted dramatically from simple unit-price negotiation to complex, carbon-conscious, compliance-driven supply chain integration. Commercial buyers must account for three structural industry evolutions.
With the implementation of the EU Carbon Border Adjustment Mechanism (CBAM) and North American Buy Clean policies, top tier Chinese exporters are transitioning to hydro-powered green aluminum billets. Buyers must request Environmental Product Declarations (EPD) covering cradle-to-gate emissions, ensuring seamless customs clearance and LEED/BREEAM green credits.
Rising on-site construction wages in North America, Europe, and Australia have rendered field-assembled knock-down (KD) bay windows uneconomical. The procurement trend favors factory-pre-assembled structural corner mullions with factory-tested cantilever support brackets, reducing job-site installation labor hours by up to 65%.
International developers are demanding direct factory audit visibility via cloud video portals and automated milestone reporting. Forward contracts now index London Metal Exchange (LME) aluminum spot prices alongside long-term fixed fabrication processing fees, protecting multi-phase projects from unexpected raw material swings.
Modern bay windows present complex structural and thermodynamic challenges. Because bay windows project outwards past the building’s thermal envelope, they are subjected to multi-directional wind shear, dead-weight deflection, and severe thermal flanking.
Conventional single-strut thermal breaks fail under extreme temperature differentials. Our latest bay systems utilize 34mm–45mm multi-cavity glass-fiber reinforced polyamide (PA66 GF25) thermal strips backfilled with low-density polyolefin foam, virtually eliminating condensation on interior mullions even when exterior ambient temperatures fall below -25°C.
A critical failure point in standard bay windows is corner post buckling under dead weight and wind loads. We engineer custom hollow-section variable angle mullions (30°, 45°, 90°, and custom radii) reinforced with internal galvanized steel cores or high-tensile 6063-T6 aluminum inserts calculated using Eurocode 9 and AS1664 structural aluminum standards.
Commercial bay installations are increasingly incorporating motorized chain-actuators integrated into central Building Management Systems (BMS). Glass compositions have transitioned from simple dual-pane Low-E to triple-pane units with double silver soft-coatings and electrochromic or motorized blind-between-glass (BBG) systems for real-time solar heat gain optimization.
| Performance Characteristic | Standard Market Grade (Baseline) | DERCHI Architectural High-Performance Grade | Relevant International Test Standard |
|---|---|---|---|
| Thermal Transmittance (Uw) | 2.4 – 2.8 W/m²·K (Single-strut break) | 0.9 – 1.4 W/m²·K (Multi-cavity + Warm edge) | ISO 10077-1 / NFRC 100 |
| Wind Load Resistance | 2500 Pa (Serviceability) | 4500 – 6000 Pa (Reinforced Structural Mullion) | ASTM E330 / AS 2047 / EN 12210 |
| Watertightness Penetration | 300 – 450 Pa | 700 – 900 Pa (Triple EPDM Gasket System) | ASTM E547 / EN 12208 |
| Acoustic Isolation (Rw / STC) | Rw 28 – 32 dB | Rw 38 – 44 dB (Acoustic Asymmetric Laminated) | ISO 717-1 / ASTM E413 |
| Extrusion Alloy & Temper | Generic 6063-T5 Secondary Scrap Blend | Primary Virgin 6063-T6 / 6061-T6 (Wall 2.0–3.0mm) | GB 5237 / ASTM B221 / EN 755 |
| Surface Coating Longevity | Basic Powder (5-7 Years degradation) | AkzoNobel / PPG Fluorocarbon PVDF (20+ Years warranty) | AAMA 2605 / Qualicoat Class 2 |
Clear, unambiguous answers addressing engineering, quality control, shipping logistics, and compliance from our overseas sales engineering division.
Send us your window schedules, architectural elevations, or tender specifications. Our technical engineering division will generate free CAD shop drawings, glass performance simulations, and competitive CIF/FOB quotations within 24 business hours.