CE / NFRC Verified
OEM NFRC Waterproof Thermal Break Aluminum Stacking Bi-fold Door
Polyamide PA66 Strip
Heavy-Duty Rollers
Waterproof EP Gasket
Engineered Architectural Door Systems Catalog
Manufactured in our 180,000 m² Foshan fabrication center utilizing 6063-T5/T6 structural aluminum alloy, thermal-break engineering, and multi-point structural locking systems.
CE / NFRC Verified
Acoustic Rated
Energy Efficient Aluminum Clad Wood Tilt and Turn Hybrid System
Multi-Axis Hardware
Low-E Dual IGU
U-Value ≤ 1.3
Architectural French
Minimalist French Narrow-Stile Tempered Glass Aluminum Door
Anodized Black Finish
Toughened Glazing
Interior Partition
Impact Defense
Structural Reinforced Aluminum Security & Entrance System
Anti-Intrusion Core
Multi-Lock Geometry
Powder Coated
Ultra-Slim Track
Integrated Aluminum Sliding & Invisible Screening Door Solution
Barrier-Free Sill
Hidden Pleated Track
High Tensile Mesh
Sound Transmission Class 38
Heavy-Duty Acoustic Insulated Aluminum Alloy Interior Sliding Door
Dual Damper Buffering
Sound Reduction Rw38
Hidden Interlock
AS 2047 N6 Compliant
AS2047 High-Performance Precision Aluminum Lift & Slide Door
Triple-Track System
Low-E Double Laminated
Sealing Strip EPDM
Reinforced Armor Core
Commercial Heavy-Duty Pivot Aluminum Armored Internal/Entry Door
Concealed Pivot Hinge
Acoustic Drop Seal
Biometric Compatible
180,000㎡
Foshan Production Base
Fully integrated extrusion, CNC processing, and automated anodizing workshops.
600+
Technical Workforce
In-house facade engineers, structural architects, and fabrication artisans.
100+
Patents & CE Certifications
Full compliance with CE EN 14351-1, ISO 9001, AS 2047 N6, and UL certifications.
25+
Years Engineering History
Recognized among the Top 10 premium door and window manufacturing groups.
Technical Whitepaper Insight
Structural Rigidity, CE Verification & Alloy Metallurgy
Internal architectural partition systems require a delicate equilibrium between ultra-narrow visible sightlines and high torsional rigidity. When architects specify aluminium framed internal doors for high-traffic commercial spaces or luxury multi-family developments, conventional residential extrusions exhibit excessive deflection under localized lateral loading.
At our Foshan production facility, all profile systems are engineered from primary ingot-grade 6063-T5 and 6060-T66 architectural aluminium alloys, maintaining a consistent wall thickness of 2.0 mm to 3.0 mm across critical structural chambers. In accordance with EN 12020-2 tolerances and the Construction Products Regulation (EU CPR No 305/2011), our CE-certified internal door assemblies undergo stringent factory production control (FPC) testing:
- CE EN 14351-1 & EN 1634-1 Standards: Rigorous evaluation of mechanical durability, operating forces (Class 2 per EN 12046-2), and structural resistance against cyclic opening (exceeding 200,000 cycles without hinge deflection per EN 1191).
- Glazing Compliance (EN 12150-1): CNC dry-glazed utilizing tempered or laminated safety glass secured by concealed EPDM continuous co-extruded gaskets, eliminating toxic volatile organic compounds (VOCs) on interior installation sites.
- Surface Finishing Integrity (QUALICOAT & QUALANOD): Anodized layers exceeding 20 μm (Class AA20) or architectural powder coatings tested to 1,000 hours of neutral salt spray without micro-fissuring or loss of gloss.
Data-Driven Procurement
Specification Matrix: Internal Aluminium Systems vs. Alternative Substrates
A quantitative technical evaluation comparing commercial-grade CE-certified aluminium frame systems against solid core timber, standard steel, and commercial PVC for internal specifications.
| Performance Criterion | CE Certified Aluminium (Our System) | Solid Core Timber Doors | Hollow Metal / Mild Steel | Interior Commercial UPVC |
|---|---|---|---|---|
| Dimensional Stability (RH 20%-95%) | Zero swelling/shrinkage; linear expansion 23×10⁻⁶/K | Prone to swelling, warp, and jamb binding (±3.5mm) | Dimensionally stable; prone to galvanic corrosion | High thermal movement; prone to sagging in large spans |
| Acoustic Attenuation (Rw / STC) | Rw 32 dB to 44 dB with acoustic drop-seals & IGU | Rw 28 dB to 35 dB (dependent on density and seals) | Rw 30 dB to 40 dB (requires mineral wool filling) | Rw 25 dB to 32 dB (limited chamber damping) |
| Visible Frame Stile Width | Slimline profiles: 16 mm to 38 mm ultra-narrow | Bulky stiles: 90 mm to 120 mm required for structural integrity | Typical profile width: 50 mm to 75 mm | Heavy sash profiles: 70 mm to 100 mm |
| Lifecycle Expectancy & Maintenance | 35+ Years; wipe-down maintenance; 100% recyclable | 10-15 Years; requires periodic varnishing/repainting | 15-20 Years; requires anti-rust remediation | 10-12 Years; subject to UV yellowing & embrittlement |
| Environmental & VOC Rating | A+ Rating, zero formaldehyde, low carbon extrusion | Variable adhesive off-gassing (E1/E2 resins) | Inert, but high embodied processing energy | Chlorinated chemistry; disposal issues |
Market Intelligence & Forecasting
Procurement Trends Reshaping Commercial & High-End Residential Doors
Analysis of project tenders across the EU, North America, Southeast Asia, and Australasia highlights five pivotal procurement shifts driven by sustainable certification standards, spatial modularity, and smart facility management.
Decarbonized Sourcing & EPD Verification
Procurement directors and sustainability consultants for LEED, BREEAM, and DGNB-certified buildings now mandate certified Environmental Product Declarations (EPD). Sourcing focuses on recycled-content aluminium billets smelted using renewable hydro-electric power, reducing embodied carbon footprints to below 4.0 kg CO2e per kg of finished architectural profile.
Flush-to-Wall Frameless Engineering
The architectural market has decisively transitioned away from traditional surface-mounted architraves. The dominant trend centers on sub-frame concealed profile systems (recessed into drywall or plasterboard) and zero-clearance hidden pivot hinges, delivering an uninterrupted planar aesthetic with seamless coplanar alignments.
Acoustic Privacy within Open Plan Blueprints
Post-pandemic workplace design and modern open-plan luxury residential layouts require localized acoustic isolation without sacrificing natural daylight. Specifiers demand internal glazed aluminum doors delivering laboratory-certified sound transmission reductions of Rw 38 dB to 42 dB, incorporating perimeter acoustic seals and auto-drop bottom seals.
Smart Access & Concealed Automation Integration
Internal access control is shifting from mechanical mortise locksets to fully integrated electronic access. Commercial facilities and luxury suites procure aluminum profiles with concealed wire pathways, pre-machined strike pockets, and integrated magnetic reed switches compatible with RFID, biometric, and centralized BMS protocols.
BIM-Driven Custom Modular Fabrication
Global general contractors no longer accept standardized batch catalogs that force on-site field trimming. Sourcing protocols demand LOD 350 to LOD 400 BIM models from factory partners, allowing bespoke sizing per door schedule, zero-tolerance clash detection, and direct factory-to-opening barcode traceability.
Manufacturing Excellence
Technological Innovations in Aluminium Internal Door Production
How modernized 5-axis CNC machining, structural bonding, and nanotechnology coatings deliver superior structural endurance and tactile refinement.
Sub-Millimeter Tolerances & Advanced Surface Engineering
Traditional internal aluminum doors frequently suffer from corner joint misalignment and visible hardware fasteners. In our Guangdong production center, manufacturing centers around automated multi-axis CNC machining centers that mill hinge recesses, lock-body pockets, and internal corner chevrons directly from 3D CAD files with a machining precision of ±0.1 mm.
Structural joints are stabilized utilizing cast aluminum corner brackets injected with two-component polyurethane bonding adhesives, ensuring lifetime joint integrity that resists racking even under severe seismic micro-movements. Additionally, our finishing workshop applies ultra-fine microscopic blast treatment (ceramic bead peening) followed by European hard-coat anodization, producing a velvety, fingerprint-resistant micro-texture that withstands aggressive hospital sanitizers and heavy hospitality turnover.
Why Partner with Us
Direct-from-Factory Scalability & World-Class Standards
Operating from China's primary industrial door and window manufacturing hub in Foshan, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) delivers end-to-end reliability for international project delivery.
180,000 ㎡ Automated Production Capacity
Equipped with automated cutting lines, glass processing centers, and testing rigs capable of processing over 35,000 door sets annually. Our scaled operations ensure stable container lead times and project-phase delivery matching large commercial construction milestones.
✓ CE Certification EN 14351-1
✓ ISO 9001 Quality Assurance
✓ AS 2047 N6 Wind Pressure
✓ UL Fire-Rated Listings
Over 25 Years of Global Project Execution
Recognized as a Top 10 premium brand among Chinese fenestration groups. Having successfully delivered multi-family towers, resort villas, and government fit-outs across the USA, Canada, Australia, the Philippines (showcased at WORLDBEX 2025), and the Middle East, our technical team works in your target time zone with comprehensive English technical support.
✓ 100+ Patents & Testing Reports
✓ Free Shop CAD & BIM Drafting
✓ Barcode Pallet Traceability
✓ Zero-Racking Corner Injection
Procurement & Specification Guidance
Frequently Asked Questions for Project Specifiers
Critical engineering, certification, logistical, and customization answers for international contract buyers, architects, and procurement managers.
What specific CE harmonized standards do your aluminium framed internal doors meet?
Our products comply with EN 14351-1:2006+A2:2016 for performance characteristics. Glazed panels meet EN 12150-1 for thermally toughened safety glass, hardware meets EN 1906 and EN 1935 durability cycle tests (200,000 operation cycles), and profiles meet EN 12020-2 structural tolerances. CE Declaration of Performance (DoP) documents are issued for each order batch.
Can profiles be integrated into custom wall thicknesses and flush drywall frames?
Yes. We engineer modular, adjustable sub-frames designed to clamp walls ranging from 75 mm to 300 mm thickness. We also provide zero-reveal concealed frames that install directly behind drywall plaster beads for a frameless architectural finish.
What acoustic ratings can your internal glazed doors achieve?
Standard single glazed slim profiles with perimeter magnetic seals achieve Rw 32 dB to 35 dB. When configured with double-glazed acoustic PVB laminated glass (e.g., 5mm+0.76mm acoustic PVB+5mm) and an automated drop-down bottom seal, our assemblies achieve certified acoustic reductions up to Rw 42 dB.
What are the factory lead times for customized project schedules?
Following approved CAD shop drawings and finish verification, standard manufacturing lead times are 25 to 35 calendar days. For multi-phase tower developments, we stage production to match container shipment windows directly to your destination port (e.g., Rotterdam, Long Beach, Manila, Melbourne).
How do you protect profiles and glazing during international maritime container transit?
Every extrusion is covered in protective static film, wrapped in moisture-resistant bubble film, protected on all corners with reinforced edge protectors, and secured within fumigated multi-ply plywood crates strapped to custom steel transport skids to eliminate transit deflection.
Can you provide engineering shop drawings and BIM objects prior to contract signing?
Our engineering department provides preliminary shop drawings and Revit (.rfa) BIM families within 48 hours of receiving your architectural door schedule and floor plans to assist in specification and clash detection.
Ready to Engineer Your Door Schedule?
Consult with our structural door engineers today. Submit your opening dimensions, hardware schedules, or architectural tender documents for immediate pricing, CE compliance reports, and full shop drawings.