Featured OEM Aluminium Doors & Windows Portfolio
Explore high-performance architectural systems engineered for rigorous wind-load resistance, acoustic suppression, thermal efficiency, and contemporary aesthetic precision. Custom dimensions, thermal barrier configurations, and finishes available for international bulk procurement.
Commercial Aluminium Bi-Fold Glass Garage Door
French Style Black Aluminum Sliding Glass Window
Custom Slim Frame Aluminium Bifold Patio Door
Aluminum Slim Frame Frosted Glass Bathroom Door
Custom Luxury European Tilt Turn Casement Windows
Modern Double Glazed Aluminum Swing Doors & Windows
Luvindow Custom USA Villa Modern Exterior Solid Wood Pivot Doors
Clear Acrylic Sliding Folding Retractable Partition Door
Why Tier-1 Contractors & Developers Choose DERCHI
Headquartered in Foshan, China's fenestration capital, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) combines more than 25 years of metallurgical and window systems engineering with an integrated 180,000㎡ industrial footprint.
Precision Tooling & High-Volume Extrusion Milling
Our intelligent smart manufacturing base runs automated CNC 4-axis profile machining centers, robotic corner-crimping units, and automatic dual-head miter saws. With tight manufacturing tolerances calibrated to ±0.2mm, our factory delivers zero-defect profile squaring and flawless structural joint seals across large-scale export batches.
From high-wind-load coastal sliding doors to thermally insulated casements and monumental pivot systems, every fenestration assembly is built strictly to project-specific CAD shop drawings and architectural schedules.
Certified Code Compliance
Fully tested and accredited to international standards: CE (EN 14351-1), AS2047 (Australian N6 cyclonic testing), ISO 9001, UL fire ratings, and North American NFRC thermal guidelines.
Full OEM/ODM Customization
Complete bespoke extrusion dies, specialized profile wall thicknesses (1.4mm to 3.0mm), custom powder-coat shades (Tiger, AkzoNobel), anodized, and PVDF fluorocarbon coatings.
Turnkey Shop Drawings
In-house structural engineering teams provide comprehensive CAD and 3D BIM integration files within 48 hours, detailing wind load deflections, structural mullion calculations, and anchorage details.
Ocean Export Packaging
Reinforced fumigated plywood crates, high-density polyethylene film wrapping, corner guards, and desiccants safeguard against sea spray, micro-abrasions, and container humidity swings.
Engineering Metallurgy & Structural Fenestration Dynamics
An analytical overview of metallurgical grades, thermal barrier mechanics, insulated glass unit (IGU) dynamics, and operational hardware topologies for modern architectural envelope engineering.
1. Primary Metallurgy & Structural Alloy Classification
In high-performance sliding door and window manufacturing, architectural performance is fundamentally rooted in billet metallurgical purity. DERCHI exclusively utilizes primary 6063-T5 and 6063-T6 architectural-grade aluminum alloys, adhering to ASTM B221 and GB 5237 specifications. Compared to secondary scrap-recycled melts, virgin 6063-T6 provides an ultimate tensile strength exceeding 205 MPa and yield strength exceeding 170 MPa. This structural rigidity allows structural mullions and interlocking sliding stiles to support monumental glass panes weighing up to 450 kg without exceeding the allowable structural deflection limit (L/175 or L/250 under peak design wind pressure).
2. Polyamide Isothermal Barriers & Condensation Resistance
Standard monolithic aluminum has a thermal conductivity (k) of approximately 160 W/(m·K), presenting high heat dissipation and condensation risk. Our thermal break sliding profiles integrate PA66-GF25 (polyamide reinforced with 25% chopped structural glass fibers), lowering system U-values to under 1.6 W/(m²·K) for complete fenestration assemblies. The thermal expansion coefficient of PA66-GF25 (2.3 × 10⁻⁵ /K) closely mirrors that of structural aluminum (2.4 × 10⁻⁵ /K), preventing longitudinal delamination, shear failure, and gas leakage across radical operational temperature deltas (-30°C to +80°C).
| System Configuration | Alloy & Wall Spec | Thermal Break Insert | Typical Glass Makeup | Thermal Transmittance (U-Value) | Acoustic Attenuation (Rw) | Max Panel Height |
|---|---|---|---|---|---|---|
| Slim-Frame Minimalist Slider | 6063-T6 / 2.0 mm | PA66-GF25 (18mm) | 6mm Low-E + 12Ar + 6mm | 1.8 - 2.1 W/(m²·K) | 33 - 36 dB | 3,500 mm |
| Heavy-Duty Lift & Slide Door | 6063-T6 / 2.5 - 3.0 mm | PA66-GF25 (24mm Multi-Cavity) | 8mm Low-E + 16Ar + 8mm | 1.3 - 1.6 W/(m²·K) | 38 - 42 dB | 4,200 mm |
| European Tilt & Turn Window | 6063-T5 / 1.8 mm | PA66-GF25 (34mm Multi-Chamber) | 5mm + 12Ar + 5mm + 12Ar + 5mm | 1.0 - 1.3 W/(m²·K) | 40 - 45 dB | 2,400 mm |
| High-Traffic Bi-Fold / Concertina | 6063-T6 / 2.0 - 2.2 mm | PA66-GF25 (20mm) | 6mm Temp + 14Ar + 6mm Temp | 1.6 - 1.9 W/(m²·K) | 35 - 38 dB | 3,200 mm |
| Monumental Architectural Pivot Door | Internal Steel/Alloy Composite (3.0mm) | Continuous High-Density Foam Fill | Laminated Insulated Safety Core | 1.2 - 1.5 W/(m²·K) | 39 - 43 dB | 6,000 mm |
3. Insulated Glazing Units (IGU) & Spectrally Selective Coatings
Glazing constitutes up to 85% of an aperture's surface area. Our export systems feature double and triple insulated glass units produced with robotic dual-seal perimeter application (polyisobutylene primary seal, structural silicone secondary seal). By incorporating soft-coat magnetron sputtering Low-E coatings, solar heat gain coefficients (SHGC) can be engineered from 0.22 to 0.55 depending on latitude and climate zone. Warm-edge polymer composite spacers (Technoform, Swisspacer) eliminate edge-of-glass thermal bridges, mitigating condensation under high indoor relative humidity.
Future Procurement Trends in Architectural Fenestration
How international developers, general contractors, and supply chain directors are navigating sustainability standards, decarbonization tariffs, and advanced manufacturing sourcing.
1. Low-Carbon Aluminum & CBAM Compliance
With the implementation of the EU Carbon Border Adjustment Mechanism (CBAM) and global Scope-3 ESG reporting, international buyers are shifting toward hydro-powered smelter billets. Sourcing certified low-embodied-carbon aluminum (<4.0 kg CO₂ per kg Al) ensures project eligibility for LEED Platinum, BREEAM, and zero-carbon building tax exemptions.
2. Ultra-Narrow Sightlines & Structural Concealment
Modern architectural briefs mandate invisible frames. Modern procurement is moving toward bottom-rolling concealed tracks where frames are fully embedded into ceilings, floors, and jambs, leaving visible interlock profiles under 20mm. This requires high extrusion tensile properties and automated factory machining to prevent lateral deflection under dynamic gusting.
3. Consolidated Factory Procurement
Fragmented sourcing across distinct window, entry door, and garage gate vendors introduces high shipping costs, site coordination delays, and interface incompatibilities. Sourcing all exterior envelope packages from an integrated 180,000㎡ plant enables consolidated 40HQ container shipments, lowering ocean freight overhead by up to 32% per project.
Technological Innovations Reshaping Fenestration Systems
Emerging technologies integrated into DERCHI OEM lines to address extreme climatic shifts, smart automation, and sound attenuation.
Smart Motorization & Building Automation (BMS)
Concealed brushless DC servomotors embedded within top headers, synchronized with rain and wind sensors or building automation systems via RS485 / KNX protocols. Smooth, anti-pinch closing logic supports massive sliding panels up to 800 kg with push-button or smartphone activation.
Dynamic Electrochromic & Photovoltaic Glass
Integration of PDLC (Polymer Dispersed Liquid Crystal) privacy films and electrochromic switchable glass that adjusts visible light transmission (VLT) from 60% down to 1% in response to solar intensity, slashing HVAC chiller operational loads by up to 28% in tropical and desert regions.
Multi-Chambered Aerogel Thermal Isolation
Incorporation of nanoporous silica aerogel insulation cores within extrusions and glazing perimeters. Achieving extreme insulation thresholds suitable for Passive House (Passivhaus) standards with overall window Uw ratings below 0.8 W/(m²·K).
The DERCHI 5-Step Turnkey Sourcing Process
A dependable, transparent supply chain methodology designed to eliminate project surprises, ensure structural compliance, and meet strict construction milestones.
Engineering Review
Initial assessment of architectural plans, window schedules, local wind loads, and thermal targets. Our engineers recommend optimal extrusion series, glass buildups, and hardware platforms.
CAD Shop Drawings
Detailed production drawings specifying profiles, anchoring fasteners, perimeter silicone joints, glass configurations, and elevation sections. Approved before tooling starts.
Precision CNC Milling
Extrusions are CNC machined, mitred, crimped, and pre-assembled in our Foshan smart plant. Hardware alignments and roller balances are tested in full-height mock-up bays.
Crating & Logistics
Every sash and frame is labeled per floor and elevation plan, wrapped in protective film, and packed into fumigated ocean-safe crates for shipping via major ports.
Site Support & Warranty
Clear bilingual installation manuals, exploded diagrams, and direct video technical support ensure local trades install each system correctly, backed by a comprehensive 10-year warranty.
Frequently Asked Technical Questions
Direct, technical answers addressing the practical engineering, logistics, and compliance inquiries most frequently raised by international purchasing directors.
Q1: How does DERCHI ensure structural integrity under coastal cyclonic wind pressures?
We configure structural mullions and interlock profiles with internal steel or titanium-alloy reinforcements engineered to satisfy local wind load requirements (e.g., AS/NZS 1170.2, ASCE 7-16, or EN 1991). Our sliding and casement assemblies are third-party tested up to 4,500 Pa cyclic wind pressures, meeting Australia's AS2047 N6 rating and Florida Building Code high-velocity hurricane zone (HVHZ) impact criteria.
Q2: What are the standard lead times for custom OEM/ODM extrusion profiles and tooling?
For existing catalog systems, typical manufacturing lead time is 25 to 35 calendar days depending on glass unit complexity. For bespoke extrusion dies, new die fabrication and physical profile extrusion sampling takes 12 to 16 days. Following sample sign-off and shop drawing approval, full-scale batch fabrication proceeds within 25 days.
Q3: Can you supply full fenestration packages compliant with European CE and North American NFRC?
Yes. Every export product batch can be accompanied by CE Declaration of Performance (DoP) certificates per EN 14351-1. For North American developments, we provide thermal and structural simulation reports (THERM and WINDOW software modeling) demonstrating compliance with U-factor, SHGC, and VT benchmarks specified by IECC and local municipal codes.
Q4: What surface coating technologies are used to guarantee salt spray and corrosion resistance?
Depending on coastal exposure ratings, we offer Qualicoat Class 2 / AAMA 2604 & 2605 certified super-durable thermoset powder coatings (AkzoNobel, Tiger Drylac) and 3-coat PVDF fluorocarbon coatings containing minimum 70% Kynar 500 resin. Our marine-grade finishes endure over 3,000 to 4,000 hours of continuous neutral salt spray testing (ASTM B117) with zero blistering, fading, or chalking.
Q5: How do you solve air infiltration and water tightness on ultra-slim flush bottom tracks?
Our minimalist sliding doors utilize concealed integrated sub-sill drainage troughs with one-way backflow flapper valves. Sub-frame channels evacuate water at rates exceeding 150 liters/hour per linear meter. Multi-fin EPDM co-extruded gaskets and continuous silicone-treated weather-pile fin seals maintain positive pressure air tightness up to 600 Pa (Class 4 / EN 12207).
Q6: What hardware brands and operational cycle thresholds do your sliding systems incorporate?
We partner with premier hardware manufacturers including German leaders (Siegenia, Roto Frank, Hoppe, G-U) and Italian engineering specialists (Giesse), alongside our proprietary heavy-duty DERCHI precision hardware line. Our stainless steel roller bogies with self-lubricating sealed needle bearings are tested to 100,000 full operating cycles without structural degradation or roller track gouging.
Connect with DERCHI Senior Fenestration Engineers
Whether you need structural wind load calculations, custom profile extrusion tooling, or a comprehensive project estimate for full-container export deliveries, our engineering team is ready to assist your project requirements.