Thermal Break
Engineered Fenestration Portfolio & System Recommendations
Explore precision-extruded 6063-T6 aluminum profiles, high-load European hardware, and certified thermal insulation solutions engineered to meet rigorous international building codes.
Acoustic & Interior
Architectural French
Smart Security
Hurricane Rated
European Swing
Miami-Dade NOA
Modular Screen
Industrial Production Capacity & Engineering Thresholds
Built upon a dedicated 180,000 m² smart manufacturing campus in Foshan, China, DERCHI powers premier residential estates, multi-family mid-rises, and luxury commercial projects worldwide.
180,000m²
Modern Production Base
Automated CNC extrusion, powder coating lines, and precision assembly lines located in the epicenter of high-end aluminum manufacturing.
25+ Yrs
Fenestration Engineering
Quarter-century of specialized engineering expertise catering to strict building codes across Europe, North America, and Australasia.
100+
Patents & Certifications
Comprehensive compliance covering CE (EN 14351-1), NFRC thermal performance, AS2047 structural ratings, and ISO 9001 quality audits.
600+
Skilled Craftsmen & Engineers
Dedicated bilingual project managers, CAD/BIM facade technicians, and on-line quality control inspectors monitoring every order.
Future Procurement Trends in Architectural Aluminium Fenestration
As international energy policies tighten and modern architecture favors continuous daylighting, commercial buyers must navigate several paradigm shifts in facade specifications.
Stringent Thermal Regulations (Part L, GEG & Title 24)
Global energy benchmarks are making standard non-thermal profiles obsolete. Specifiers now demand ultra-low overall window and sliding door thermal transmittance values ($U_w$ and $U_d \le 1.1\ \text{W}/(\text{m}^2\cdot\text{K})$). This transition necessitates advanced polyamide thermal barrier breaks (PA66 GF25), multi-cavity chambers, warm-edge spacers, and argon-filled triple-glazed units to eliminate condensation risk and pass compliance audits.
- Polyamide PA66 with 25% fiberglass reinforcement
- Triple IGU with double Low-E soft coatings
- Elimination of cold bridging at sill junctions
Minimalist Sightlines With Oversized Structural Spans
Architects are driving demand for "invisible" frames with interlock widths under 20mm, flush thresholds, and massive multi-slide panels exceeding 3.5 meters in height. Realizing these panoramic visual openings without compromising wind-load resistance requires virgin 6063-T6 or 6005-T5 structural alloys, hidden stainless steel roller carriages capable of supporting 400kg+ sash weights, and reinforced internal steel mullion stiffeners.
- Narrow interlocking stiles down to 18mm
- Integrated recessed bottom tracks flush with finished floor
- Concealed motorized lift-and-slide automation
Extreme Climate & Hurricane Impact Resilience
Extreme climate occurrences across coastal zones (Florida, Caribbean, Gulf Coast, Southeast Asia, and Pacific Australia) have transformed impact ratings from an option into a non-negotiable procurement standard. Modern supply contracts prioritize products certified under Miami-Dade NOA (TAS 201, 202, 203) and AS2047 cyclonic testing, integrating ionoplast interlayers (SentryGlas) that prevent envelope breaches during Category 5 wind loads.
- Cyclonic positive/negative pressure test compliance
- Laminated storm glass with 1.52mm/2.28mm SGP interlayer
- Sub-sill drain systems handling 720 Pa water resistance
Engineering Specification & B2B Verification Matrix
A reference checklist for structural engineers, project specifiers, and procurement officers comparing DERCHI system parameters against general market offerings.
| Performance Dimension | Standard Market Grade | DERCHI Heavy-Duty Architectural Grade | Governing Testing Standard |
|---|---|---|---|
| Aluminium Alloy & Temper | Recycled billet 6063-T4 / variable hardness | Primary Billet 6063-T5 / 6063-T6 with uniform wall thickness (2.0mm - 3.0mm) | EN 755 / ASTM B221 |
| Thermal Insulation ($U_d$ / $U_w$) | Non-thermal or 14mm PVC strip ($U_w > 2.8$) | 24mm - 34mm PA66 GF25 Polyamide Strips ($U_w \le 1.1\ \text{W}/(\text{m}^2\cdot\text{K})$) | EN ISO 10077-2 / NFRC 100 |
| Wind Pressure Resistance | Class 2 / 1200 Pa service load | Class 5 / $\ge 4500\ \text{Pa}$ (Exceeds 250 km/h wind loads) | EN 12210 / AS 2047 N6 |
| Water Tightness Under Pressure | Class 4A (150 Pa water penetration) | Class 9A / $\ge 900\ \text{Pa}$ featuring stepped drainage sills | EN 12208 / ASTM E331 |
| Acoustic Attenuation ($R_w$) | 28 dB - 30 dB standard dual glaze | 38 dB - 45 dB with asymmetric laminated acoustic glass | ISO 717-1 / ASTM E90 |
| Security & Intrusion Defense | Single latch lock, standard keep plates | Multipoint Shoot-bolt Systems, anti-lift pins, RC2/RC3 anti-burglar grade | EN 1627 / PAS 24 |
Direct Factory Manufacturing Backed by 25+ Years of Proven Reliability
Founded in Foshan, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) has grown into a benchmark brand in premium architectural openings. By unifying metallurgical engineering, profile extrusion, surface anodization, fluorocarbon (PVDF) coating, and automated glazing in one continuous facility, we give global clients direct control over cost, quality, and delivery schedules.
Our engineering division partners directly with Tier-1 builders across the UK, Germany, France, Australia, Canada, and the United States, providing complimentary CAD shop drawing generation, thermal calculations, and custom structural section design for bespoke developments.
- 180,000 m² Integrated Facility
- Pre-assembly & 100% Water/Air Testing
- Selected by UK Schüco Partner for Multi-Villas
- Full Sea-Freight Protective Crating
- Direct Technical Engineering Team
- Certified Under CE, ISO 9001, AS2047, NFRC
Certified System Quality
CE marked conformity compliant with EN 14351-1 declaration of performance standards.
Custom CAD Shop Drawings
Detailed architectural joinery, structural calculations, and shop drawings provided free of charge.
Zero-Defect Quality Control
Multi-point pressure verification, dimensional tolerance checks, and functional hardware cycle testing.
Worldwide Sea Packaging
Heavy-duty fumigated timber crates with anti-moisture wrap delivered to global ports.
Frequently Asked Procurement & Technical Questions
Addressing essential compliance, shipping, and engineering specifications for commercial contractors, facade consultants, and importers.
Q How does DERCHI ensure thermal break doors comply with local European and North American building codes?
We configure each fenestration line specifically to the local climate zone. For European installations, profiles incorporate German Technoform PA66 polyamide insulating bars to attain $U_d$ values down to $0.9\text{--}1.2\ \text{W}/(\text{m}^2\cdot\text{K})$, satisfying German GEG and UK Approved Document Part L. For North American developments, our units are engineered in accordance with NFRC 100/200/500 simulation criteria to fulfill ASHRAE 90.1 energy baselines.
Q Can sliding door profiles be customized for oversized openings with concealed drainage?
Yes. Our engineering department specializes in bespoke structural profiles. We offer concealed sub-sill tracks, pocket-door configurations, and 90-degree frameless corner glass-to-glass sliding units. In addition, our sills can be integrated with architectural zero-threshold linear trench drains, meeting barrier-free ADA accessibility guidelines while preserving severe storm water tightness up to 900 Pa.
Q What structural alloys and surface treatments are utilized to prevent coastal corrosion?
All load-bearing members are extruded from virgin 6063-T5 or 6063-T6 aluminum ingots. Surface finishing is executed via architectural AkzoNobel or PPG powder coating compliant with Qualicoat Class 2 / AAMA 2604/2605 specifications, or deep-bath anodizing up to 25 microns ($\mu$m). These treatments withstand continuous 3,000+ hour salt-spray testing, making them ideal for oceanfront villas and high-humidity resorts.
Q What is the standard production cycle and how are breakages prevented during international sea freight?
Standard custom manufacturing takes approximately 25 to 35 business days following CAD shop drawing approval. For transport, every door sash and window frame is completely enclosed in protective peel film, corner-guarded with rigid composite protectors, cushioned with EPE foam, and sealed inside fully enclosed, fumigated marine-plywood crates with moisture desiccants. We maintain a near-zero transit damage rate across shipments to Rotterdam, Hamburg, Los Angeles, and Sydney.
Q Do you supply full documentation for commercial building control sign-off?
Yes. Every project order is supplied with comprehensive engineering submittals: structural wind load calculations, glass stress analysis, factory quality inspection records, thermal transmittance certificates, and CE Declarations of Performance (DoP) under EN 14351-1. This documentation ensures rapid sign-off by municipal building inspectors and structural engineers.
Q How does DERCHI support installation contractors on site?
Alongside complete 3D exploded assembly diagrams and written installation protocols, our English-speaking engineering team provides dedicated video-conference guidance tailored to your project time zone. For large-scale multi-unit commercial developments, we can dispatch on-site technical supervisors or provide custom factory-pre-glazed modules to minimize field installation hours.
Accelerate Your Project With Factory-Direct Architectural Fenestration
Send us your door and window schedule, architectural elevations, or tender drawings. Our engineering team will supply free CAD shop drawings, thermal calculations, and competitive factory-direct pricing within 24 hours.
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