High-Performance Aluminum Impact Fenestration Systems
Engineered for cyclic wind loads up to ±150 PSF and ASTM E1886/E1996 Large Missile projectile impacts. Direct factory export with proprietary thermal barriers and multi-tier weather seals.
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25+ Years of Fenestration Engineering Excellence
Operating out of Foshan, Guangdong—the epicenter of global aluminum extrusion innovation—Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) leads precision manufacturing across a sprawling 180,000 m² production complex.
In-House Die Casting & CNC Milling
We exercise strict control over alloy purity using virgin A00 aluminum ingots. Our computer-controlled 5-axis machining centers maintain corner-joint tolerances within ±0.15mm, guaranteeing air-tight structural integrity against cyclone forces.
Alloy: 6063-T5 / 6063-T6Robotic Corner Injection
Corner joints feature precision-machined heavy aluminum chevrons secured via pneumatic two-component polyurethane (PUR) injection crimping. This creates leak-proof hermetic seals that resist torsional rack under hurricane winds.
Tensile Bond > 12.0 MPaOn-Site NABL/ISO Accredited Testing
Our internal testing lab simulates static air infiltration (ASTM E283), cyclic structural water penetration (ASTM E331 at 15 PSF), and missile firing cannons up to 50 ft/s to validate batches before third-party auditing.
Calibration: ISO/IEC 17025Structural Engineering for Severe Windstorm & Impact Resistance
Designing fenestration capable of resisting Category 5 hurricane wind loads (speeds exceeding 165 mph) requires complete structural continuity across the glass, silicone bite, aluminum extrusion matrix, and perimeter masonry anchors.
Laminated Glass Engineering
Our impact glass units utilize double-ply heat-strengthened or tempered glass bound by high-modulus DuPont SentryGlas (SG5000) or 0.090-inch Solutia PVB interlayers. Even if the outer glass envelope fractures upon severe missile impact, the inner composite diaphragm prevents building envelope depressurization.
Structural Silicone Bite Depth
We deploy high-tensile two-component structural glazing silicones (Dow Corning 983 / SikaSil IG-25). Bite depth and contact glueline calculations follow ASTM C1401 guidelines, safely transferring negative cyclic wind pressures directly to the robust aluminum frame ribs.
AAMA 2605 Fluorocarbon Finishes
Coastal and tropical microclimates subject architectural metalwork to high UV radiation and salt fog. Our extrusion coating lines feature genuine 70% Kynar 500 / PVDF fluorocarbon coatings, tested across 4,000 hours of continuous salt spray (ASTM B117) with zero chalking or adhesion loss.
| Performance Characteristic | DERCHI Heavy Aluminum Impact | Standard Commercial Windows | Reinforced UPVC / Vinyl Impact | Roll-Formed Steel Fenestration |
|---|---|---|---|---|
| Structural Wind Load Capacity | +120 / -150 PSF (Design Pressure) | +30 / -30 PSF (Standard DP) | +50 / -60 PSF (Limited Span) | +100 / -120 PSF (Rigid Frame) |
| Large Missile Resistance | Pass (9-lb 2x4 Timber @ 50 ft/s) | Fail (Shatters & Breaches) | Marginal (Frame Deforms) | Pass (High Initial Strength) |
| Salt-Spray Corrosion Resistance | Class A (PVDF 70% Fluorocarbon) | Class C (Standard Powder Coat) | Class B (UV Degradation/Chalk) | Class D (Risk of Rust Seepage) |
| Thermal Transmittance (U-Value) | 0.24 – 0.32 BTU/hr·ft²·°F (PA66) | 0.65 – 0.90 BTU/hr·ft²·°F | 0.26 – 0.34 BTU/hr·ft²·°F | 0.45 – 0.60 BTU/hr·ft²·°F |
| Acoustic Isolation (STC Rating) | STC 38 – STC 44 (Acoustic Laminate) | STC 26 – STC 29 | STC 32 – STC 35 | STC 34 – STC 37 |
Future Procurement Trends in Impact Fenestration (2025–2030)
Cross-border fenestration procurement is moving beyond baseline code compliance. Leading developers and glazing contractors now focus on energy metrics, low-carbon circularity, and smart-building integration.
1. Low-Carbon Circular Aluminum
Global environmental disclosures (such as LEED v4.1 and BREEAM) require institutional developers to source low-carbon aluminum billets refined via hydroelectric smelting. The industry is moving toward post-consumer scrap content thresholds above 75%.
2. Digital BIM Integration
Procurement contracts increasingly require parametric BIM (Revit/IFC) models with embedded thermal properties and finite-element structural analysis data. Factory-direct CAD/CAM engineering speeds up shop drawing sign-offs from 6 weeks down to 5 days.
3. Concealed Motorization & Automation
Oversized impact patio sliders with sash weights exceeding 800 kg are becoming standard in modern coastal architecture. Demand is growing for concealed brushless DC motors, obstacle-detection sensors, and central smart-home integration.
4. Supply Chain De-risking via OEM
Wholesale distributors and developers are bypassing trading-company intermediaries. Direct relationships with audited manufacturers provide verifiable mill certifications, direct factory warranties, and factory-level custom crating that minimizes shipping damage.
Procurement & Engineering FAQ
Key technical and logistics questions addressed by our senior fenestration engineers to help streamline your specification and importing process.
What testing codes confirm impact performance for coastal and hurricane regions?
Impact fenestration requires testing to ASTM E1886 (cyclic air pressure differential) and ASTM E1996 (large missile impact). For South Florida and coastal USA projects, Miami-Dade NOA protocols (TAS 201, TAS 202, TAS 203) apply. In Australia, AS 2047 and AS 1170.2 cyclonic testing govern design criteria. DERCHI supplies full laboratory test reports for engineering submittals.
What is the difference between standard PVB and SentryGlas (SG) interlayers?
While standard polyvinyl butyral (PVB) delivers solid baseline impact performance, DuPont/Kuraray SentryGlas ionoplast interlayers offer 5 times the tear strength and up to 100 times the rigidity. SentryGlas maintains structural integrity under elevated temperatures, preventing the glass panel from sagging even after both lites crack under extreme debris impacts.
How does DERCHI resolve thermal transmission in aluminum impact frames?
Aluminum is naturally conductive. To meet stringent modern energy codes (IECC / Title 24 / ASHRAE 90.1), we incorporate glass-fiber-reinforced polyamide 66 (PA66GF25) structural insulation strips. This thermal break interrupts heat conduction, helping achieve window U-factors down to 0.28 BTU/hr·ft²·°F without compromising structural load resistance.
How are heavy impact fenestration products protected during ocean freight?
Export packaging uses fumigated solid-plywood skeleton crates lined with multi-layer high-density EVA foam pads. Every glass perimeter is fitted with impact-absorbing edge protectors, and framing elements are sealed with scratch-resistant shrink film. Desiccant packs inside the crates prevent condensation corrosion during multi-week ocean transit.
Can you provide custom profiles, sill extrusions, and OEM private labeling?
Yes. Our in-house tooling facility designs, casts, and extrudes custom aluminum dies to match your exact project profiles or regional fenestration systems. We support full OEM private labeling, customized protective film application, custom hardware stamping, and custom architectural packaging for high-volume distributors.
What parameters are required to receive an engineering quotation and CAD takeoff?
Please provide the window/door schedule indicating rough opening dimensions, operation styles (casement, sliding, fixed, tilt-turn), required Design Pressure (DP) or wind speed criteria, glass build-up requirements (tint, low-E, acoustic specs), frame finish (AAMA 2604/2605), hardware preferences, and delivery terms (FOB or CIF).
Partner with an Audited Impact Window OEM/ODM Factory
Connect with our technical engineering desk in Foshan to review your project schedules, request physical extrusion profile samples, or receive factory-direct CIF project pricing within 24 hours.
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