OEM/ODM Aluminium Concertina Doors Manufacturers & Factory

Industrial-Grade Architectural Precision, Custom Engineering & High-Volume Extrusion Manufacturing for Global Facade Contractors and Wholesale Importers

ISO9001 & CE Certified AS2047 Cyclonic Tested 180,000㎡ Mega Facility
Precision Product Portfolio

Featured Engineering Solutions & Glazing Systems

Direct-from-factory architectural fenestration platforms engineered for demanding structural loads, weather-tightness, and acoustic containment.

Manufacture Aluminum Glass Door Minimalist Wide for Kitchen Cabinet Wardrobe Doors

Manufacture Aluminum Glass Door Minimalist Wide for Kitchen Cabinet Wardrobe Doors

Technical Data & Specs
Exterior Frameless Aluminum Bi-Fold Glass Patio Door

Sunroom Frameless Accordion Door Partition Wall Glass Curtain Exterior Bi Fold Door Hardware Aluminum Balcony Glass Door Patio

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Aluminium Frameless Glass Bi-Fold Window System

Full View Aluminium Folding Window Frameless Glass Bi-Fold Window System For Balcony Villa Patio Exterior

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Australian Standard Aluminium Casement Windows with Screens

Australian Standard Aluminium awning window Inward Opening Aluminum Casement Windows with Screens and Grill for House

Technical Data & Specs
Exterior Aluminum Casement Door with Mesh

Top Manufacturer Aluminum Alloy Casement Doors Latest Design Exterior Main Casement Hinged Door Aluminium Door with Mesh

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Modern Chinese Style Aluminum Sliding Screen Door

Modern Chinese Style Aluminum Sliding Door Aluminum Alloy Fiberglass Screen Netting Bathroom Living Room

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Panoramic Corner Aluminum Lift Sliding Patio Doors

Seamless Corner Aluminum Lift Sliding Doors Thermal Break Heavy Duty Panoramic Patio Glass Doors Large Opening For Modern Villa

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Magnetic Frosted Glass Aluminum French Casement Door

Hot Sale Quiet Magnetic Close Anti-Pinch Frosted Privacy Light-Transmitting Aluminum Glass French Casement Door For Home

Technical Data & Specs
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Architectural Engineering White Paper

Structural Integrity, Kinematic Mechanics & Extrusion Metallurgy

A granular engineering analysis of commercial-grade concertina (accordion bi-fold) door assemblies for high-wind facades, extreme cyclonic regions, and acoustically insulated developments.

Aluminium concertina doors (bi-folding sliding partitions) represent one of the most mechanically sophisticated fenestration products in modern architecture. Unlike static fenestration systems or standard sliding panels that distribute static dead loads across a continuous bottom rail, concertina systems transfer dynamic loads across multi-point articulated hinges, suspended top tracks, or heavy-duty bottom-hung roller carriages under alternating positive and negative wind pressures.

As an established OEM/ODM aluminium concertina doors manufacturer and factory, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) engineers custom architectural profiles that satisfy rigorous structural criteria. Our profiles are extruded exclusively from virgin billet Alloy 6063-T6 and 6060-T66, guaranteeing tensile yield strengths exceeding 215 MPa and Rockwell hardness ratings above 12 HRB. In high-span residential villas, beachfront hospitality venues, and commercial sky-lounges, door leaf heights often reach up to 4,500 mm with panel widths up to 1,200 mm. At these proportions, resistance to flexural deflection under wind-load stress (per ASTM E330 and Australian Standard AS2047) requires precision profile moment of inertia ($I_x$) calculations to avert air and water infiltration failure.

Polyamide PA66-GF25 Thermal Insulation

Our thermal break profiles feature dual multi-chambered polyamide strips infused with 25% glass fibre reinforcement. This mechanical barrier suppresses structural thermal bridging, achieving ultra-low system U-values ($U_w \le 1.1\text{ W}/(\text{m}^2\cdot\text{K})$) when coupled with Argon-filled triple glazed low-E units.

Quad Stainless Steel 316 Bogie Rollers

Kinematic reliability is guaranteed through sealed precision stainless steel 316 bearings encapsulated in self-lubricating polyoxymethylene (POM) wheels. Rated to withstand 300 kg deadweight loads per panel, each hinge set has survived 150,000 continuous articulation cycles without axial deviation.

Isobaric Pressure-Equalized Drainage

Utilizing continuous multi-tier EPDM vulcanized co-extruded gaskets, our frames incorporate internal pressure-equalization chambers and hidden weep slots. This geometry prevents capillary water suction during torrential precipitation, passing 600 Pa dynamic water penetration tests.

Engineering Parameter Commercial Profile Specification Standard Residential Spec Testing Standard / Compliance
Aluminium Alloy Billet Alloy 6063-T6 / 6060-T66 Architectural Alloy 6063-T5 GB/T 5237, ASTM B221
Wall Thickness (Structural) 2.0 mm to 3.0 mm heavy-duty reinforced 1.6 mm to 1.8 mm EN 12020-2 / AS 2047 Class N6
Thermal Barrier Core 24 mm – 34 mm PA66-GF25 Multi-cavity 14.8 mm Polyamide Bar DIN 4108 / NFRC 100/200
Structural Wind Load Resistance Serviceability: 3000 Pa; Ultimate: 4500+ Pa Serviceability: 1500 Pa; Ultimate: 2500 Pa AS/NZS 1170.2, ASTM E330
Water Penetration Resistance Class 9A (600 Pa) with stepped threshold 300 Pa with flush sub-sill EN 12208, AAMA 501.1
Air Infiltration Rating Class 4 (< 0.5 m³/h·m at 100 Pa) Class 3 (< 1.5 m³/h·m) EN 12207, ASTM E283
Acoustic Attenuation ($R_w$) $R_w \ge 42\text{ dB}$ (with laminated IGU) $R_w \approx 32\text{ dB}$ (standard DGU) ISO 10140-2, ASTM E90
Strategic Market Intelligence

Future Procurement & Technological Trends (2026–2035)

How global environmental compliance, building envelope decarbonization, and smart automation are redefining specifications for bulk window and door buyers.

B2B procurement leaders and architectural specification managers are actively pivoting away from fragmented supply vendors toward consolidated manufacturing partners that offer full transparency, structural calculation packages, and verified Environmental Product Declarations (EPDs). The global architectural aluminium fenestration landscape is experiencing fundamental technological transitions driven by climate extremes, stricter net-zero mandates, and luxury hospitality expansion.

Integrated Motorization & Building BMS

Hidden brushless DC servo motors built into head tracks allow automated opening of 8-panel accordion partitions via RS485/KNX building automation protocols, featuring anti-pinch radar safety curtains compliant with EN 16005.

Ultra-Slim 28mm Interlocking Sightlines

Architects demand maximized glazed area ratios. Engineering developments utilize structural silicone glazing (SSG) to turn glass into a load-carrying diaphragm, reducing vertical stile widths down to an ultra-narrow 28 mm.

Low-Carbon Recycled Aluminium Billets

Green building standards such as LEED v4.1 and BREEAM mandate documented embodied carbon. DERCHI offers Hydro-certified low-carbon extrusion options containing up to 75% recycled end-of-life post-consumer aluminium scrap.

Extreme Marine-Grade Barrier Coatings

For luxury oceanfront estates in the Caribbean, Latin America, and Southeast Asia, standard powder coats fail. Procurement contracts prioritize Qualicoat Seaside Class 2 and AAMA 2605 70% Kynar 500 PVDF resins rated for 4,000-hour salt spray exposure.

Enterprise Manufacturing Capabilities

Guangdong Dejiyoupin (DERCHI) Industrial Excellence

Over 25 years of specialized door and window fabrication across our 180,000㎡ intelligent production base in Foshan, China.

DERCHI 180,000 square meter intelligent production base in Foshan

Direct Mill Scalability & In-House Value Stream

Recognised among the Top 10 premium door and window brands in China, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) operates a vertically integrated industrial ecosystem. We eliminate intermediate broker margins by controlling profile thermal crimping, 5-axis CNC machining, robotic glass bonding, double-corner mitering, and pre-shipment trial dry-assembly under one master facility.

With 600+ skilled personnel and a certified production capacity exceeding 50,000 square meters monthly, we execute complex custom OEM/ODM commissions for commercial facade contractors, luxury condominium developers, and large-scale fenestration distributors worldwide.

25+
Years Engineering Expertise
180,000㎡
Modern Production Base
600+
Manufacturing Specialists
100+
Patents & Global Accreditations
Automated CNC Aluminum Profile Machining

5-Axis High Precision CNC Milling

Quality Inspection and Rigorous Testing Line

100% Pre-Assembly Kinematic Testing

International Quality and Compliance Certifications

CE, AS2047, ISO9001 Compliance Verified

Standardized Manufacturing Process

The 5-Phase Turnkey OEM/ODM Engineering Workflow

From parametric shop drawings to ocean container loading, our project management protocol eliminates site installation discrepancies.

01

Requirement Analysis & Structural Feasibility

Our technical team reviews client CAD schedules, climatic parameters (wind velocity, thermal targets, acoustic decibel cutoffs), and threshold elevations. We calculate inertia moments ($I_x$, $I_y$) to establish optimal profile wall thickness and reinforcement.

02

Free BIM/CAD Shop Drawings & Tooling

We generate 1:1 scale shop drawings detailing sill drainage, anchoring flanges, motor positioning, and jamb interfaces. For proprietary extrusions, our mold department designs and machines custom extrusion dies within 15–20 days.

03

Precision CNC Machining & Assembly

Extrusions are processed on automated double-headed cutting saws and 5-axis CNC machining centres. Corners are injected with dual-component polyurethane structural adhesive before pneumatic crimping, guaranteeing water-tight 90° joints.

04

100% Mockup Trial Run & Optical QC

Prior to export packaging, every concertina door assembly is completely hung in our test bay. Quality engineers inspect operating glide effort (hand-push force ≤ 20 N), multi-point lock throw alignment, gasket compression tolerances, and coating thickness (minimum 60 μm).

05

Export-Grade Crating & Global Logistics

Sashes are padded with polyethylene protective film, surrounded by honeycomb corner guards, and secured inside fumigated seaworthy plywood crates. We offer complete FOB, CIF, or DDP shipping terms to major ports across North America, South America, Europe, Australia, and the Middle East.

Procurement Due Diligence

Frequently Asked Questions by Commercial Buyers

Direct technical, logistical, and warranty answers for facade consultants, property developers, and fenestration importers.

What are the key structural distinctions between top-hung and bottom-hung concertina systems?
Top-hung concertina systems carry the entire structural deadload of the glass panels from the lintel/overhead header beam. This requires a certified structural steel or reinforced concrete lintel with minimal deflection (span/500 deflection limit) to prevent binding. Bottom-hung systems transfer 95% of the panel weight down to the finished floor slab, making them ideal for retrofit projects or openings where the overhead beam cannot bear heavy point loads. As a specialized OEM/ODM factory, DERCHI manufactures both kinematic configurations and equips bottom-hung systems with self-cleaning inverse drainage tracks.
What minimum wall thickness and alloy temper do you recommend for high wind load zones?
For coastal zones, hurricane-prone latitudes, or high-rise balconies (above 10 stories), we mandate an architectural profile wall thickness between 2.0 mm and 3.0 mm extruded from prime 6063-T6 or 6060-T66 aluminium alloy. Our engineers calculate the required moment of inertia based on target wind loads (e.g., AS2047 N6 rating > 4,500 Pa or ASTM E330 > 70 psf) and reinforce the central interlocking stiles with internal steel mullion splines when necessary.
Can DERCHI supply custom anodized or powder-coated finishes resistant to salt spray?
Yes. We provide Qualicoat Seaside Class 2 certified architectural powder coatings (AkzoNobel, Tiger Drylac) and AAMA 2605 compliant 70% fluorocarbon PVDF finishes. These multi-coat finishes undergo chromate-free pre-treatment and are warrantied against chalking, blistering, and corrosion for up to 20 years, even when subjected to 3,000-to-4,000-hour ASTM B117 salt spray environments. Hard anodized finishes (Grade AA25, film thickness ≥ 25 microns) are also produced in-house.
What is your standard production lead time and Minimum Order Quantity (MOQ) for custom OEM orders?
For standardized systems using existing factory extrusion profiles, our typical production turnaround is 25 to 30 calendar days from the date of shop drawing approval. For completely custom ODM profiles requiring new extrusion dies and thermal crimping setups, tooling takes 15 days followed by 30 days for bulk extrusion and assembly. Our flexible manufacturing lines support custom villa projects with an MOQ as low as 1 complete set, as well as full container loads (FCL) of 40ft HQ containers for commercial developers.
How do you guarantee air and water tightness at the threshold on flush-floor designs?
Flush or zero-step thresholds are highly desired for barrier-free indoor-outdoor transitions, but traditional flush tracks are susceptible to wind-driven rain penetration. DERCHI solves this using a patented concealed sub-sill drainage channel equipped with stainless steel perimeter drain grates and magnetic drop-down seal mechanisms. When the door panels fold closed, multi-lip EPDM silicone fins engage against an isobaric chamber, delivering water resistance up to 300 Pa without requiring an awkward raised interior step.
What international testing certifications accompany shipments to global markets?
All DERCHI systems are produced under ISO 9001 certified quality control regimens. Depending on project destination, we supply full compliance packages including European CE certification (EN 14351-1), Australian Standards AS 2047 (acoustic, water, and structural wind resistance) and AS 1288 (safety glazing), as well as American NFRC/AAMA thermal and air infiltration test reports. Mill test certificates (MTC 3.1) and glass batch test reports accompany the commercial export shipping dossier.
How are oversized panels packaged to ensure damage-free intercontinental transit?
We employ an engineered five-tier packaging protocol: (1) Anti-scratch electrostatic protective films across all visible aluminium faces; (2) Closed-cell high-density EPE foam wrapping; (3) Rigid corner buffers; (4) Desiccant bags inside moisture-sealed heat-shrink wrap; (5) Heavy-duty fumigated ISPM-15 compliant wooden cases reinforced with internal steel tension straps. Units can be shipped pre-glazed or knock-down (KD) with numbered matching components to optimize container volumetric efficiency.
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Direct Factory Procurement Partnership

Accelerate Your Project Timeline with Factory-Direct Engineering

Send your architectural schedules or profile cross-sections. Our in-house technical department returns complete structural calculations, thermal simulations, and an itemized quotation within 24 hours.