Acoustic Glazed
Industrial Product Portfolio
Featured Commercial & Residential Interior Door Systems
Engineered using 6063-T5 virgin billet aluminium, concealed hardware configurations, and high-performance safety glazing suited for global developers, contractors, and wholesale distributors.
Heavy Duty
Minimalist Slim
Luxury Pivot
Concealed Jamb
French Swing
Thermal Break
Folding Accordion
Enterprise Manufacturing Scale
Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI)
Operating directly from the global capital of aluminium extrusion in Foshan, China, DERCHI brings more than 25 years of specialized fenestration manufacturing to international real estate developers, hospitality chains, and Tier-1 procurement contractors.
25+
Years Industry Experience
180,000m²
Production Campus
18,000+
Global Projects Completed
100+
Patents & Certifications
Proprietary Engineering
Holder of the patented Four-Side Six-Point Anti-Theft Lock system and over 100 industrial utility patents for high-cycle interior resilience.
Intelligent QC Flow
360° multi-stage optical profile inspection, laser corner-crimp checking, and digital pre-assembly testing eliminate on-site dimensional drift.
International Codes
Fully audited compliance covering CE (EN 14351-1), NFRC, AS2047, CSA, and ISO 9001 quality management guidelines for effortless customs clearance.
Tier-1 Brand Pedigree
Recognized as a "China Famous Brand" by Xinhua News Agency, supplying marquee projects for hospitality leaders including Hilton and Atour Hotels.
Whitepaper & Technical Analysis
Aluminium Internal Door Systems: The Structural Shift from Timber to Architectural Metal
In modern high-density residential towers, ultra-luxury villas, and commercial spaces, internal doors have shifted from decorative space dividers to engineered acoustic and environmental envelope controls. Traditional solid wood and medium-density fibreboard (MDF) doors present persistent failure modes when installed across fluctuating climate zones, particularly hygroscopic expansion, warp torsion under HVAC cycling, and substrate delamination in humid coastal or sub-tropical settings.
Direct wholesale sourcing from certified Chinese aluminium factories solves these structural liabilities through the application of primary structural alloy 6063-T5 or 6060-T66. Precision cold-drawn extrusions with wall thicknesses ranging from 1.6mm to 3.0mm provide dimensional stability with zero angular warp across 3000mm ceiling heights. By integrating polyamide PA66 thermal barrier strips and co-extruded EPDM cellular weatherstripping, modern internal aluminium doors deliver Sound Transmission Class (STC) ratings exceeding 38 dB, while resisting water immersion, institutional cleaning chemicals, and termite penetration.
| Engineering Attribute | Standard Timber / Hollow Core Door | Commercial Steel Internal Door | DERCHI Architectural Aluminium Door |
|---|---|---|---|
| Material Integrity | Hygroscopic warp up to 6mm/m | High corrosion risk in wet areas | Zero dimensional deflection (6063-T5 Alloy) |
| Acoustic Rating (STC) | 20 – 26 dB (Hollow/Solid core) | 28 – 32 dB (Insulated core) | 35 – 42 dB (Double/Triple Glazed + EPDM) |
| Surface Durability | Scratch-prone veneer / Polyurethane | Enamel paint prone to chipping | Qualicoat Class 2 Powder / 25μm Anodized |
| Concealed Frame Integration | Requires expansive timber architraves | Bulky cold-rolled jamb reveals | Invisible frameless flush-to-drywall system |
| Hardware Cycle Life | 50,000 cycles before hinge droop | 100,000 cycles (Industrial hinges) | 200,000+ certified cycles (3D adjustable hinges) |
Market Intelligence
B2B Procurement Trends Shaping Aluminium Internal Doors (2025–2030)
Procurement directors and project developers face tightening building codes and changing design demands. Sourcing teams rely on these four market vectors to future-proof their supply chain.
Sub-Slim Sightlines & Concealed Hardware
Demand for visible frame widths under 18mm has surged by over 45% in prime real estate. Forward-thinking factories are pairing micro-bezel profiles with 3-way adjustable concealed hinges embedded completely inside the subframe, creating a razor-thin shadow gap against drywall finishes.
Decarbonization & Low-Carbon Aluminium
International ESG regulations, such as the EU CBAM and US Green Building Council LEED v4.1, require verifiable low-carbon footprints. Tier-1 Foshan suppliers utilize hydro-electric certified smelted ingots and post-consumer recycled extrusion billets to cut embodied carbon below 4.0 kg CO2e per kg profile.
BIM Integration & Parametric Fabrication
Bulk procurement has moved away from static catalogs toward direct BIM (Building Information Modeling) file exchange. Providing Revit and IFC parametric families allows commercial contractors to simulate rough opening clearances, acoustic performance, and cycle durability before issuing purchase orders.
R&D Innovation Trajectory
Engineering Milestones in Modern Factory Extrusions
Our continuous R&D investments bridge aesthetic requirements with heavy commercial engineering tolerances.
Acoustic Decoupling Channels
By introducing multi-cavity EPDM perimeter compression gaskets and sound-dampening acoustic interlayers (PVB/SGP) within 6mm+12A+6mm glass panels, our internal systems eliminate mechanical flutter and noise transfer between corporate boardrooms or private suites.
CNC Corner Crimping & Cleating
We replace mechanical screw fastening with heavy-duty cast aluminum corner corner-keys coated in two-component polyurethane bonding adhesives. Hydraulically crimped on dual-head automated CNC machines, frames remain torsionally rigid through high-cycle usage.
Surface Fluorocarbon & Anodizing
Finishing lines apply automated vertical electrostatic powder coatings, PVDF fluorocarbon coatings, and electrolytic anodizing up to 25μm. This prevents scratch whitening, skin-oil staining, and fading under internal lighting and UV window leakage.
Factory Clarifications
Frequently Asked Questions for Wholesale & Contract Sourcing
Direct answers to technical, logistical, and contract questions commonly raised by overseas purchasing managers and project estimators.
What is the standard minimum order quantity (MOQ) and production turnaround for custom interior doors? +
Our flexible OEM production line supports project-based batching. Standard bespoke project runs begin at 20 sets for standardized profiles and finishes (such as matte black, anodized silver, or champagne gold). For large commercial projects or proprietary custom extrusion dies, MOQs are determined by extrusion run weights (typically 500kg per profile die). Standard production lead time is 25 to 35 business days following final sign-off on shop drawings (CAD/BIM) and receipt of project deposit.
How does DERCHI ensure frame-to-wall squareness and zero error for overseas pre-hung shipments? +
All doors undergo our proprietary 360° Quality Control System. Prior to crate packaging, full test-assemblies are performed on laser-calibrated squaring benches. We verify diagonal tolerances within ≤1.0mm, hinge recess mortise alignments within ≤0.5mm, and latch bolt engagements. Each door leaf and corresponding subframe are barcoded and matched with unit schedules, allowing your field carpenters to install units quickly on site.
Can aluminium internal door frames be fitted into standard drywall partitions (plasterboard/stud walls)? +
Yes. Our internal door frames are engineered specifically for dry construction methodologies. We supply both two-piece split telescopic subframes (accommodating variable wall thicknesses from 100mm to 280mm without visible fasteners) and minimalist concealed embedded frames designed to be direct-screwed to light gauge steel studs and taped over with drywall compound for a trimless finish.
What ocean export packaging standards are used to prevent transit damage and glass breakage? +
All exported door panels are protected with 80μm low-tack protective PE surface films, high-density polyethylene (EPE) foam edge bumpers, and reinforced heavy corrugated corner shields. Completed door leafs and dismounted subframes are packed into ISPM-15 compliant fumigated solid plywood crates with moisture-absorbing desiccant packs. Structural steel banding holds the crates secure inside shipping containers, preventing shifting during container transport.
Does your factory support commercial multi-point locking and magnetic acoustic drop-down seals? +
Yes. We integrate our patented Four-Side Six-Point Anti-Theft Lock systems for high-security applications, alongside silent magnetic latch locks from European hardware partners (Hoppe, Roto, Siegenia) and domestic precision equivalents. For acoustic barrier requirements, we rout automatic mechanical drop-down sweep seals directly into the bottom rail profile, sealing the floor gap down to zero whenever the door panel closes.
What testing documentation and commercial certifications accompany wholesale shipments? +
Every export shipment includes material mill certificates verifying 6063-T5 aluminum alloy composition, glass impact safety test reports (SGCC / EN 12150 / AS/NZS 2208), finish thickness audits, and ISO 9001 compliance logs. Complete export clearance documentation—including commercial invoices, packing lists, clean on-board bills of lading, and preferential Certificates of Origin (Form E, Form F, or RCEP)—is provided to ensure fast customs clearance and duty savings.