Built in our state-of-the-art 180,000㎡ manufacturing complex, our aluminium glass double doors undergo exhaustive testing for acoustic attenuation, airtightness, and structural thermal performance.
Engineered for high-traffic retail spaces with reinforced 6063-T6 aluminum extrusion, impact-tempered glass, and weather-sealed dual stiles.
16mm ultra-narrow sightlines with superior acoustic insulation chambers, ideal for luxury kitchen partitioning and master ensuite entries.
PA66 nylon thermal barrier prevents heat bridging. Multi-point locking mechanism certified for RC3 security and extreme climatic conditions.
Anti-condensation warm-edge spacers, argon filling, and heavy stainless track system providing smooth silent operation up to 400kg per sash.
Classic French aesthetics engineered with high-tensile alloy, concealed heavy-duty hinges, and hermetic EPDM compression gaskets.
High wind load rating compliant with ASTM standards, integrated drainage sub-sills, and Low-E solar-reflective glass treatments.
Engineered for extreme typhoon resistance and tested to AS 2047 N6 cyclonic parameters with multi-chamber structural aluminum profiles.
Continuous flush-floor tracks with integrated child-safe finger pinch guards, offering seamless 90% wide clear architectural openings.
Ranked consistently among the Top 10 High-End Door & Window Brands in China, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) operates from an expansive 180,000㎡ industrial intelligent manufacturing base in Foshan, Guangdong. Backed by German CNC robotic machining, automated glass tempering lines, and an elite team of 600+ skilled fenestration technicians, we provide factory-direct engineering certainty to global real estate developers, contractors, and prestigious architectural studios.
Unlike trading intermediaries, our factory maintains rigorous end-to-end quality control spanning billet extrusion, fluorocarbon coating, insulated glass assembly, and pre-shipment structural simulation. We hold over 100 international certifications and patents, providing complete peace of mind for rigorous commercial specifications across North America, the Gulf Cooperation Council (GCC), Europe, and Australasia.
International commercial builders and developers are moving away from fragmented sourcing toward factory-integrated turnkey solutions. Here are the macro procurement trends dominating Tier-1 architectural projects.
Developers bypass domestic distributor markups of 40–60% by sourcing double doors factory-direct from vetted Chinese manufacturers who supply complete project schedules with free CAD shop drawings and pre-glazed sub-assemblies.
Procurement specifications now legally require third-party laboratory test reports (including AS 2047, CE, and ASTM thermal transmittance tests) before factory releases, heavily penalizing non-certified workshops.
With mounting job site labor costs across North America, Europe, and Australia, contractors demand fully pre-hung double door cassettes with installed hardware, cutting site installation time from days to mere hours.
Our Foshan R&D engineering center continues to pioneer breakthroughs in thermal dynamics, acoustic attenuation, and architectural hardware endurance.
Incorporating multi-chamber 34mm PA66 GF25 thermal breaks that push overall U-values down to Uw < 1.2 W/m²·K, dramatically outperforming standard code minimums in both scorching desert and arctic environments.
Transitioning from passive tinted glass to active PDLC switchable privacy and motorized Low-E solar variable glazing that automatically modulates solar heat gain (SHGC) via building management systems (BMS).
Integration of concealed 3D adjustable 400kg stainless pivot hinges and invisible multi-point automatic motor drives supporting facial recognition, smartphone RFID keyless entry, and smart-home integration.
Triple-layer PVDF electrostatic coatings capable of withstanding 5,000+ hours of continuous neutral salt spray (NSS) testing, guaranteeing zero surface chalking, pitting, or fading along high-salinity coastal coastlines.
| Performance Dimension | DERCHI High-Spec Engineering | Generic Market Standard | Compliance Standards Verified |
|---|---|---|---|
| Thermal Insulation (Uw) | 1.1 – 1.4 W/m²·K (Thermally Broken PA66) | > 2.8 W/m²·K (Non-broken profile) | EN ISO 10077-1, NFRC Certified |
| Acoustic Attenuation | Rw 42 – 47 dB (Laminated IGU setup) | Rw 28 – 32 dB (Single/Dual standard) | ASTM E90, ISO 140-3 |
| Wind Pressure Resistance | 6000 Pa (Serviceability / Ultimate limit) | 2000 – 3000 Pa | AS 2047 N6, ASTM E330 |
| Water Penetration Resistance | 900 Pa (Static test continuous seal) | 300 – 450 Pa | AAMA 501.1, EN 12208 Class 9A |
| Security & Forced Entry | RC3 / WK3 Certified Multi-point Locking | Single deadbolt / uncertified | EN 1627, PAS 24 Approved |
Everything you need to know about custom engineering, international shipping logistics, technical compliance, and working directly with DERCHI.
Our doors are specifically engineered with primary multi-chamber 6063-T6 architectural aluminium profiles separated by high-grade German Technoform polyamide (PA66 GF25) thermal barriers. For severe climates such as the GCC (UAE, Saudi Arabia, Qatar) or tropical coastal regions, we apply marine-grade Qualicoat Class 2 or Class 3 PVDF fluorocarbon coatings that resist intense UV radiation and prevent warping. Furthermore, our double-glazed insulated units feature warm-edge silicone structural seals filled with 90%+ Argon gas to keep solar radiation and heat transfer strictly outside air-conditioned living spaces.
Yes. 100% bespoke engineering is the core advantage of DERCHI. We regularly fabricate double leaves up to 4,000mm in height and single sash weights exceeding 350kg. Our in-house technical department consists of dedicated facade engineers who supply free 2D/3D CAD shop drawings, structural deflection calculations, and anchoring details for consultant review and project sign-off before raw material cutting begins.
DERCHI products have passed rigorous testing in accredited third-party international laboratories. We hold CE certificates (EN 14351-1), ISO 9001 quality management authentication, Australian AS 2047 N6 cyclonic impact compliance, American AAMA/WDMA/CSA fenestration testing credentials, and UL fire-rated certifications. Comprehensive submittal packages including glass thermal data, structural calculation reports, and hardware lifecycle test sheets are provided directly for municipal code compliance.
Every double door unit is subject to our five-layer export protection standard: (1) Surface protective film on all aluminium profiles, (2) Shock-absorbing EPE pearl cotton wrapping, (3) Hard corner edge protectors, (4) Waterproof PE stretch wrapping, and (5) Fully enclosed ISPM 15 fumigation-free solid plywood export crates with internal steel-strapping reinforcement. This packaging ensures zero transit scratching, bending, or glass breakage on voyages to North America, the Middle East, or Europe.
Because we operate an expansive 180,000㎡ industrial footprint, our typical production cycle for custom aluminium double doors is 25 to 35 business days from final CAD sign-off and color chip approval. We cater to commercial multi-unit residential towers as well as bespoke high-end private villas; our MOQ is extremely flexible (starting from 1 complete set for custom villa projects, up to full container loads for multi-family commercial developments).
To provide a detailed, line-item commercial bid with exact technical calculations, please share: (1) Architectural floor plans, door elevation schedules, or rough opening dimensions; (2) Glass performance requirements (single, double, triple, Low-E, acoustic laminated); (3) Preferred aluminium surface finish (RAL color powder coat, anodized, or PVDF); and (4) Project destination port for freight calculation. Our English-speaking sales engineering team responds with complete solutions within one business day.
Connect directly with our senior fenestration engineers in Foshan. Get comprehensive submittal packages, material samples, and factory-direct pricing for your upcoming commercial or luxury residential development.