Explore our custom OEM product line engineered with structural 6063-T5/T6 alloys, heavy-duty multipoint hardware, and high-spec insulating glass units (IGU) tested to global standards.
Backed by Guangdong Dejiyoupin Doors and Windows Co., Ltd., we combine 25+ years of fenestration engineering with a colossal 180,000 m² smart manufacturing infrastructure to deliver industrial-scale precision to global B2B procurement teams.
Operating out of Shishan Town, Foshan—the world's architectural aluminium extrusion epicenter. Equipped with automated dual-corner crimping, 5-axis CNC machining, and automated powder coat processing lines.
Fully compliant with European CE (EN 14351-1), ISO 9001, North American NFRC, UL 3-hour fire-rated certifications, and Australian AS 2047 N6 cyclonic testing for coastal exposure.
100% custom shop drawings tailored to architectural schedules. Complete flexibility over thermal barrier widths (PA66 GF25), flush thresholds, oversized structural leaves, and any international RAL or fluorocarbon finish.
Dedicated sales engineering team supporting project tenders, structural wind-load calculations, thermal transmittance evaluations, and coordinated direct shipping to major international ports worldwide.
Recognized as one of the Top 10 High-End Door & Window Brands in China, DERCHI manufactures high-specification exterior aluminium back doors, entry systems, and automated enclosures that match the tightest tolerances demanded by German architectural systems.
From coastal multi-residential complexes in Australia requiring AS 2047 cyclonic integrity to passive house-tier thermal insulation in Central Europe, our doors provide unyielding structural rigidity, long-term corrosion resistance, and flawless operation.
Procuring architectural aluminium back doors requires stringent validation of alloy composition, thermal break cavity depth, air-water-structural resistance, and multi-point security hardware.
| Performance Criterion | Test Method / Code | OEM Standard Specification | High-Performance / Extreme Option |
|---|---|---|---|
| Aluminium Alloy & Temper | ASTM B221 / EN 755 | Primary 6063-T5 Extrusion (1.6mm - 2.0mm) | Structural 6063-T6 / 6061 Heavy-Wall (2.5mm - 3.0mm) |
| Thermal Barrier Insulation | EN ISO 10077-2 / ASTM C1363 | 14.8mm - 24mm Polyamide (PA66 GF25) | 34mm Multi-Chamber Iso-Bar with Aerogel Core Infill |
| Overall U-Factor (UD) | EN 10077-1 / NFRC 100 | 1.4 - 1.8 W/m²·K (Double Low-E) | 0.82 - 1.1 W/m²·K (Triple Glazed Krypton/Argon) |
| Water Penetration Resistance | EN 12208 / ASTM E331 | Class 9A (600 Pa test pressure) | Enhanced Sub-Sill Weep Drainage System (>900 Pa) |
| Air Infiltration Rating | EN 12207 / ASTM E283 | Class 4 (< 0.1 m³/h·m at 100 Pa) | Quadruple Continuous Vulcanized EPDM Gaskets |
| Wind Load / Structural Deflection | EN 12210 / AS 2047 N6 | Class C3 / 1600 Pa | Class C5 (> 2400 Pa Service / 4500 Pa Ultimate) |
| Acoustic Attenuation (Rw) | ISO 717-1 / ASTM E90 | Rw 34 dB (Standard IGU) | Rw 42 - 45 dB (Acoustic PVB Laminated Glass Assembly) |
| Burglary Resistance Rating | EN 1627-1630 / PAS 24 | RC2 / WK2 Certified Multi-Point Latch | RC3 Hardened Steel Hook-Bolts & Anti-Drill Escutcheons |
| Architectural Surface Finish | AAMA 2604 / Qualicoat Class 2 | Super-Durable Polyester Powder Coating (60-80μm) | AAMA 2605 70% PVDF Fluorocarbon / Marine Anodized (25μm) |
Need tailored shop drawings or custom profile calculations for your tender submittals?
Send an InquiryAs global building standards evolve toward net-zero operational carbon, smart automation, and weather resiliency, B2B procurement leaders must anticipate shifts in fenestration requirements.
With the EU Energy Performance of Buildings Directive (EPBD) recast, UK Future Homes Standard 2025, and stringent US Title 24 codes, standard aluminum profiles without wide polyamide thermal breaks are becoming obsolete. Sourcing teams are transitioning to deep multi-cavity thermal barriers capable of achieving sub-1.0 W/m²·K whole-door performance with integrated low-iron solar control glass.
Modern residential architecture demands floor-to-ceiling back doors and minimalist profiles with visible stiles narrower than 45mm. This necessitates aerospace-grade 6063-T6 alloy extrusion, engineered steel corner bracing, and structural structural glazing tape (SSG) that allows glass units to contribute to overall leaf rigidity against high negative wind loads.
Back and side utility entrances are historically high-risk entry points. Sourcing schedules now heavily specify integrated European multipoint motorized gearboxes compatible with facial recognition, RFID fobs, and building management protocols (RS-485 / KNX). DERCHI integrates concealed power-transfer hinges that preserve perimeter air-tightness without messy exposed wiring.
Intensifying super-storms require exterior doors to withstand continuous positive-negative pressure oscillations and high-velocity wind-driven rain. Australian AS 2047 N6 and Florida Building Code (FBC) impact requirements are spreading to Pacific Rim, Caribbean, and European coastal developments, favoring pressurized sub-sill drainage baffles and SentryGlas® interlayer configurations.
Institutional developers and ESG-governed contractors increasingly evaluate Environmental Product Declarations (EPDs). Sourcing certified primary billets manufactured using hydro-powered smelting drastically reduces embodied carbon footprint (under 4.0 kg CO₂/kg Al) while maintaining high metallurgical ductility for complex dual-tone extrusions.
To combat shipping inflation, customs complexity, and site coordination friction, project developers are consolidating vendors. Bundling architectural front entry doors, rear patio bifold systems, interior acoustic doors, and garage tambour doors with a single certified OEM manufacturer ensures seamless color matching, uniform hardware aesthetics, and single-source warranty accountability.
Our standardized six-tier QA workflow prevents on-site installation disputes and guarantees that every containerized shipment meets international architectural schedules.
Our bilingual fenestration engineers analyze your architectural door schedule, verify structural openings, evaluate wind-load parameters, and produce millimeter-exact CAD shop drawings for sign-off prior to profile cutting.
Extrusions are processed on high-precision 5-axis CNC machining centers. Cast corner brackets are mechanically crimped with two-part structural polyurethane sealant, ensuring seamless, water-tight miters and lifetime rigidity.
Automated knurling and rolling machines insert PA66 GF25 thermal struts under strictly monitored tensile shear tolerances. Double/triple glazed units with warm-edge spacers and argon gas fill are secured with vulcanized EPDM gaskets.
Every back door leaf is hung in its companion master frame within our dedicated inspection hall. Multi-point locks, Kerssenberg hinges, roller carriages, and handle clearances are cycled and verified against ±0.5mm geometric tolerances.
Profiles are wrapped in anti-scratch protective film, corner-guarded with high-density EVA foam, and crated inside fumigated, moisture-sealed plywood cases built for rough containerized ocean voyages and fork handling.
We coordinate customs documentation, bill of lading, and port clearance directly to destination ports (Rotterdam, Hamburg, Long Beach, Sydney, etc.). Technical manuals and video engineering support ensure smooth local installation.
Comprehensive answers addressing profile grades, thermal efficiency validation, hardware compatibility, order lead times, and global shipping assurances.