Engineered by Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI). Rigorously tested under ISO 9001, AS 2047, and CE safety standards to deliver world-class security, water tightness, and acoustic dampening.
Modern interior and entry swing profile featuring a 5-year structural warranty, premium multi-point windproofing, and tempered architectural glass.
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Ultra-secure perimeter barrier with high-tensile armored framing, bullet-resistant composite cores, acoustic isolation, and heavy-duty 3D hinges.
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Grand-scale exterior entryway engineered with German hydraulic pivot hardware, biometrics-integrated smart locksets, and high thermal insulation.
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Heavy-duty panoramic partition sliding door incorporating advanced composite fiberglass reinforcement, ultra-smooth bottom rollers, and cyclone seals.
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Hybrid structural profile combining external aircraft-grade aluminum shielding with internal natural solid timber aesthetics and UL-tested fire ratings.
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Precision curved extruded profile showcasing bespoke architectural radius bending, decorative Georgian grilles, and dual perimeter EPDM weatherstripping.
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Constant-force spiral spring balances ensure effortless vertical travel, concealed water drainage chambers, and effortless exterior sash-tilt cleaning.
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High-efficiency thermal break profiles coupled with triple-pane Low-E argon-filled glazing units and 304 marine-grade stainless steel anti-theft mesh screens.
View Specifications →Curved and arched aluminum windows represent the zenith of architectural fenestration, demanding micron-level precision, non-destructive alloy bending, and continuous thermal barrier integrity.
Standard rotary roll-bending frequently causes profile wrinkling or web deformation. DERCHI employs industrial CNC stretch-bending systems capable of bending 6063-T6 architectural alloys with wall thicknesses up to 3.0mm, maintaining an exact profile cross-section across continuous gothic, segmented, and semi-circular radii without surface stress cracking.
Preserving thermal insulation along an arch curve requires rolling custom fiberglass-reinforced polyamide (PA66 GF25) strips before the curving process. This avoids thermal bridge breaks, achieving overall assembly U-factors as low as 1.4 W/m²·K (0.25 BTU/hr·ft²·°F) when combined with warm-edge insulated glass units.
Our arch window mullions and frames are engineered to satisfy AS 2047 N6 atmospheric compliance. This ensures maximum design deflection limits under ultimate wind pressures surpassing 4500 Pa, delivering uncompromised air infiltration and water intrusion resistance during severe coastal typhoon conditions.
| Performance Criterion | Testing Protocol / Standard | DERCHI Factory Achieved Rating | Architectural Application |
|---|---|---|---|
| Structural Wind Load | AS 2047 / ASTM E330 | N6 Rating (> 4,500 Pa) | High-rise facades, coastal tropical villas |
| Water Penetration Resistance | AAMA 501.1 / EN 12208 | Static: 700 Pa (Class 9A / 15 psf) | Monsoon rain protection, exposed beachfronts |
| Thermal Transmittance (U-Value) | NFRC 100 / ISO 10077-2 | 1.35 – 1.60 W/m²·K | Passive building enclosures, net-zero residences |
| Sound Transmission Class (STC) | ASTM E90 / ISO 717-1 | STC 42 – 46 dB (Laminated IGU) | Urban commercial centers, hospitality projects |
| Surface Coating Durability | AAMA 2605 / Qualicoat Class 3 | Fluoropolymer PVDF (20+ Yr Anti-Fading) | High UV, marine salt spray environments |
Understanding shifting procurement landscapes, supply chain transformations, and performance criteria across Southeast Asia, North America, and Australia.
Developers are transitioning away from field-glazed arch windows due to expensive labor and inconsistent on-site sealant cures. Factory-glazed, fully unitized arched window cassettes with integrated mounting flanges reduce installation times by up to 60%, assuring factory-calibrated weatherseals directly from our Foshan manufacturing base.
The contemporary luxury market demands minimal structural framing with maximized glass sightlines. New generation arch systems feature fully concealed top pivots, hidden multipoint perimeter lock actuators, and ultra-slim European grooved euro-groove extrusions that complement both classical Palladian and minimalist modern villas.
Procurement directors are actively auditing supplier carbon footprints. DERCHI utilizes hydro-powered smelting billets and closed-loop scrap recycling, reducing embodied emissions below 4.0 kg CO2e per kg of extruded aluminum. All thermal breaks feature recyclable, non-toxic polymer compositions compliant with LEED v4.1 and Green Star metrics.
Headquartered in Foshan, Guangdong—the epicentre of global architectural metal fabrication—DERCHI has established itself as one of China's Top 10 premium window and door brands. For over 25 years, our specialized facility has delivered bespoke architectural solutions that balance structural integrity with refined European aesthetics.
From participating as an industry benchmark at WORLDBEX 2025 in the Philippines to supplying luxury estates across North America, the Middle East, and Australia, our engineering capabilities bridge international compliance and competitive factory-direct supply chains.
Essential guidance covering precision site measuring, lead times, structural coatings, and cross-border containerized logistics.
We eliminate fitting errors by generating computerized parametric CAD/BIM shop drawings for client approval prior to metal fabrication. For complex historical restorations or irregular curved apertures, we fabricate 1:1 laser-cut acrylic or MDF template gauges against which each curved extrusion is checked before surface powder coating and glazing.
For beachfront developments, island resorts, and coastal urban environments, we apply certified AAMA 2605-compliant PVDF (Fluoropolymer) coatings or seaside-class powder coatings (such as AkzoNobel or PPG). These systems undergo 4,000-hour continuous salt spray testing to prevent bubbling, chalking, and galvanic corrosion on exposed aluminum profiles.
Our advanced stretch-bending machines handle minimum radii as tight as 350mm (13.78 inches) on non-thermal or specialized thermal-break profiles, depending on structural profile depth (50mm–120mm series). Larger gothic and elliptical arches spanning over 4,500mm in chord width are engineered using reinforced internal structural splices.
Every window assembly is protected with non-marking peelable surface film, reinforced edge corner guards, and bubble cushioning, then secured within non-fumigated, moisture-sealed plywood crates. Crates are loaded with anti-shock desiccants and locked with structural steel strapping to guarantee zero flex during ocean transit.
Send your elevation plans, opening schedules, or tender documents. Our Foshan engineering department provides comprehensive CAD shop drawings, structural wind load calculations, and competitive factory-direct quotations within 24 business hours.