Engineered to exceed stringent structural deflection, air infiltration, and thermal barrier standards worldwide, our certified manufacturing lines deliver factory-calibrated aluminium doors for commercial complexes, healthcare facilities, and high-end residential estates.
Founded on 25+ years of dedicated fenestration craftsmanship, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) operates one of Asia's most advanced architectural fabrication complexes in Foshan, China. Spanning an expansive 180,000-square-meter intelligent production base, we manufacture precision aluminium door and window solutions compliant with the strictest international structural, thermal, and acoustic codes.
Backed by more than 600 highly trained metallurgical technicians and envelope engineers, our factory runs automated extrusion precision lines, multi-axis CNC machining centers, and dust-free robotic coating lines. We deliver complete, fully customized OEM/ODM aluminium standard door schedules to real estate developers, façade sub-contractors, and procurement distributors across the United States, Canada, Australia, the Middle East (UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain), and Southeast Asia.
Engineered and audited to CE marking standards, ISO 9001 quality management, Australian AS 2047 N6 structural criteria, and UL-certified fire-rated ratings. Complete third-party test submittal packs available for consultants.
German-origin 5-axis digital milling centers execute milling, drilling, corner-crimping, and hardware mortising down to ±0.2mm tolerances, preventing field adjustment delays and ensuring perfect alignment.
Our dedicated fenestration drafting division supplies parametric Revit BIM families, structural deflection calculation models, and localized 2D CAD shop drawings to expedite client and consultant sign-offs within 48 hours.
Specifying commercial aluminium standard doors requires strict adherence to profile alloy compositions, thermal barrier polymer grades, and surface treatment classes. Our OEM factory strictly follows these technical baselines:
| Performance Parameter | North American Standard | European Standard | DERCHI OEM Specification Baseline |
|---|---|---|---|
| Alloy Chemistry & Temper | ASTM B221 (6063-T5 / 6061-T6) | EN AW-6063 / EN AW-6060 | Primary billet 6063-T6, tensile strength ≥ 205 MPa, yield ≥ 170 MPa |
| Structural Wind Load | ASTM E330 (Design Wind Pressures) | EN 12210 (Class C1 to C5) | Deflection limit L/175 or L/240; audited up to 4500 Pa (AS 2047 N6 Level) |
| Air Permeability / Infiltration | ASTM E283 (≤ 0.30 cfm/ft²) | EN 12207 (Class 3 / Class 4) | Multi-layer co-extruded EPDM continuous dry-glazing gaskets; ≤ 0.05 cfm/ft² |
| Water Penetration Resistance | ASTM E331 / ASTM E547 (Static & Cyclic) | EN 12208 (Class 7A to 9A / E1050) | Multi-chamber internal cascade weep system, watertight at ≥ 700 Pa head pressure |
| Thermal Transmittance (U-Value) | NFRC 100/200 Baseline Standards | EN ISO 10077-1 / EN ISO 10077-2 | Polyamide PA66 GF25 low-conductive struts; Frame Uf down to 1.3 W/(m²·K) |
| Surface Coating Durability | AAMA 2604 / AAMA 2605 Fluoropolymer | Qualicoat Class 2 / Qualanod 25μm | 10-Year to 25-Year warranty against chalking, salt spray, and UV gloss loss |
In hot-arid desert environments (GCC region) reaching 50°C summer conditions or humid coastal fronts, thermally isolated aluminium profiles decouple outer thermal radiation from interior air-conditioned zones, completely mitigating profile bowing caused by thermal differentials.
Engineered hardware cavities adhere to universal Euro-groove standards, housing heavy-duty, corrosion-proof mushroom cams, concealed shoot bolts, and anti-drill lock cases from German tier-1 brands (Siegenia, G-U, Roto) or heavy-duty in-house stainless components.
Our electrostatic powder coating systems apply thermosetting fluoropolymer resins under strict pre-treatment protocols (chromate-free zirconium etching). Assemblies undergo 3,000+ hours of continuous neutral salt spray (NSS) testing without blistering or peeling.
Global supply chain directors, principal contractors, and developers are shifting sourcing methodologies. Understanding these core procurement trends is critical for maintaining margin control and meeting ESG commitments.
Developers are eliminating fragmented sourcing (dealing with distinct suppliers for standard exterior casements, large-span pivot doors, garage overhead doors, and cleanroom hospital doors). Contracting a single tier-1 factory capable of unified extrusion, color-matching, and coordinated shipment cuts container freight waste by up to 28% and shortens punch-list resolution times.
Under international green building standards (LEED v4.1, BREEAM, Estidama Pearl, and Saudi Green Initiative), developers require Environmental Product Declarations (EPDs). Sourcing certified low-carbon recycled aluminium billets (utilizing hydropower smelting with carbon footprints below 4.0 kg CO₂/kg Al) has become an essential procurement criterion.
Labor shortages on Western and GCC construction sites make field glazing and assembly cost-prohibitive. High-growth procurement teams are specifying factory-pre-glazed, pre-hung door units packed in steel a-frame crates. Barcode-based digital twin tracking allows contractors to map every delivered unit directly to architectural door tags.
The architectural fenestration sector is moving toward ultra-minimalism, smart automation, and extreme energy conservation. Here are the core innovations integrated into our next-generation aluminium door lines:
New structural extrusion geometries utilize internal magnesium-silicon alloy reinforcement ribs, enabling ultra-slim sightlines down to 22mm while supporting single sash weights exceeding 450 kg on heavy-duty stainless floor-recessed pivots.
Motorized commercial and residential entry systems now link directly to Building Management Systems (BMS). Automated micro-pneumatic gaskets inflate upon closure to achieve near-zero air leakage, automatically deflating during opening cycles to prevent friction wear.
By pairing 75mm thermally broken multi-cavity aluminium profiles with cutting-edge 8.3mm tempered vacuum glass units, center-of-glass thermal performance reaches Ug 0.45 W/(m²·K), matching solid insulated walls and complying with Passive House standards.
Direct answers addressing lead times, extrusion tolerances, container protection, and third-party certifications for international contract workflows.
For standard architectural profiles in regular powder-coated finishes (RAL 7016, 9005, 9016), our factory MOQ is flexible—starting from single villa schedules (approx. 50 m²) up to full multi-container commercial tenders. Standard OEM custom orders complete fabrication within 25 to 35 business days following formal CAD shop-drawing and finish swatch approval. Dedicated custom extrusion dies require an additional 10 to 14 days for die design, sample casting, and tensile stress testing.
All visible aluminium surfaces are covered with an anti-UV protective PE film rated for 6 months of outdoor clean peeling without adhesive residue. Units are then wrapped in multi-layer Pearl cotton foam, corner-protected with heavy-duty vulcanized edge guards, and crated in fully enclosed, fumigated solid-plywood export cases reinforced with interior steel strap banding. For sea transit, moisture-absorbing silica canisters are packed inside every crate to stop container-sweat oxidation.
Yes. Our engineering submittal package includes comprehensive structural FEA deflection reports confirming compliance with local building codes, AS 2047 N6 wind/water reports, CE factory conformity certifications, ISO 9001 quality audits, and UL fire test data where applicable. We also supply material composition mill certificates (MTC) proving 6063-T6 composition and Qualicoat/AAMA finish testing verification.
Aluminium has a thermal expansion coefficient of approx. 2.4 mm per meter across a 50°C temperature swing. On oversized leaves (exceeding 3.5 meters in height), our engineering department incorporates multi-part composite thermal break profiles featuring anti-bi-metal sliding polyamide bars. These allow the interior and exterior aluminium profile walls to move independently under intense solar heat, preventing sash warping and perimeter seal rupture.
Absolutely. Our CNC machining profiles support standard European 16mm/20mm Euro-groove hardware as well as American mortise lock dimensions. We maintain direct OEM procurement agreements with market leaders including Siegenia, G-U, Hoppe, Roto, Dormakaba, and Assa Abloy. We can also integrate motorized smart locks featuring biometric scanning, RFID, and dry-contact inputs for Crestron, Lutron, and KNX home automation networks.
Every commercial door schedule is delivered with detailed English-language installation manuals, 3D exploded assembly diagrams, and fastener torque specifications. For complex panoramic systems and motorized assemblies, our project engineers host high-definition video technical calls with your local site installation teams. On flagship commercial developments, we can dispatch seasoned installation field supervisors directly to job sites worldwide.
Submit your project door schedules, elevation drawings, or CAD specifications. Our senior engineering team will analyze wind loads, thermal barriers, and extrusion profiles to return an accurate proposal and value-engineering analysis within 24 hours.
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