EN 14351-1 Rated
Precision Fenestration Lineup
Featured Commercial & Architectural Door Assemblies
Engineered under ISO 9001 quality frameworks with certified structural deflection resistance, EN 14351-1 conformity, and thermal envelope integrity. Explore our eight core configurations specified by international architectural firms and commercial project developers.
Thermal & Waterproof
Built-in Acoustic Blinds
Hurricane Impact / CE
Multi-Point Locking
Built-In Grid Series
Commercial Interior
Windproof Architectural
Engineering Authority & Capacity
Foshan Industrial Scale Serving Global Architectural Projects
Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) operates from Foshan, China's central capital for precision aluminium extrusion. With more than 25 years of continuous engineering excellence and a massive 180,000 m² smart production base, our enterprise designs and manufactures custom OEM/ODM roll-up doors, high-cycle coiling grilles, architectural bi-fold portals, and heavy-duty structural entrance systems.
Recognised among the top 10 premium door and window manufacturing brands in China, DERCHI bridges the gap between cost-efficient Chinese manufacturing capacity and rigorous European architectural compliance. Our team collaborates directly with British developers, German general contractors, and global architectural specifiers to deliver turn-key fenestration packages verified to EN 14351-1, ISO 9001, AS 2047, and UL fire standards.
180,000m²
Automated Factory Campus
600+
Skilled Engineers & Technicians
100+
Patents & Global Certifications
25+
Years of Fenestration Expertise
Architectural Metallurgy & Mechanics
Engineering Integrity of Modern Aluminum Roll-Up Doors
A deep dive into profile composition, interlocking wind-lock slat profiles, high-pressure polyurethane foaming, and structural cycle longevity.
6063-T5 vs. 6061-T6 Extruded Alloys
Structural slats are cold-extruded using premium virgin aluminium billets. 6063-T5 delivers exceptional surface finish smoothness and razor-sharp profile tolerances ideal for Qualicoat Class 2 powder coating and 20-micron architectural anodizing. For hurricane-rated coastal applications, 6061-T6 temper profiles provide unmatched tensile yield strength exceeding 240 MPa.
- Wall thickness configurable from 1.2 mm to 3.5 mm
- Yield strength engineered for cyclic fatigue resistance
- Zero secondary scrap alloy contamination guaranteed
Thermal Core & Acoustic Decoupling
Double-walled hollow curtain slats are injected with CFC-free high-density polyurethane (PU) rigid foam (45 to 55 kg/m³). This mechanical core breaks thermal conduction paths, dampens airborne acoustic energy up to Rw 28 dB, and enhances bending stiffness against catastrophic positive and negative air pressure differentials in severe weather zones.
- Thermal transmittance values as low as U = 1.4 W/(m²·K)
- EPDM brush and rubber seals in deep side guide tracks
- Continuous bottom rail neoprene weather sealing
Storm Resistance & Wind-Lock End-Clips
Under severe storm conditions (EN 12424 Class 4 or 5 and ASCE 7 hurricane guidelines), door curtain blowout is prevented by heavy malleable iron or high-tensile cast aluminium wind-lock lugs riveted to alternate slat extremities. These latch into reinforced heavy-gauge structural side channels under flexural loading.
- Tested up to 2,400 Pa static wind pressure thresholds
- Structural deflection limits maintained within 1/120 span
- Resistant to cyclic torsional fatigue during high-speed operation
| Performance Characteristic | Harmonized Test Standard | DERCHI Engineering Specification | Project Application Context |
|---|---|---|---|
| Wind Load Resistance | EN 12424 / EN 12444 | Class 4 to Class 5 (>1,800 Pa to 2,400 Pa) | Coastal commercial bays, logistics hangars, typhoon regions |
| Thermal Transmittance (U) | EN ISO 10077-1 / EN 12428 | 1.4 – 2.1 W/(m²·K) with PU Core | Cold storage, climate-controlled retail, UK Part L compliance |
| Air Permeability | EN 12426 | Class 3 Performance Verification | Clean rooms, pharmaceutical distribution, dust abatement |
| Operating Cycle Durability | EN 12604 / EN 12453 | 100,000 to 250,000 Mean Cycles (MTBF) | High-frequency commercial parking garages, transit depots |
| Sound Reduction Index | ISO 10140-2 / EN ISO 717-1 | Rw = 24 dB to 28 dB Acoustic Shielding | Urban boutique storefronts, night deliveries, residential garages |
Turn-Key Manufacturing
Bespoke OEM/ODM Tooling, Extrusion & Finishing
For global fenestration distributors, architectural facade fabricators, and private label systems, DERCHI delivers full-cycle OEM/ODM customization. We transform bespoke conceptual sketches and door schedules into verified CAD shop drawings, CNC tooling, and finished structural assemblies.
Whether your project requires custom perforated micro-slats for retail air circulation, polycarbonate panoramic vision lites, high-speed spiral guide tracks, or bespoke mounting brackets, our 600+ member manufacturing infrastructure ensures strict dimensional tolerances under ±0.5 mm across continuous 12-meter extrusion spans.
CAD & BIM Engineering
Free rapid shop drawings, structural loading calculations, and Revit/IFC BIM objects aligned with your door schedule.
Custom Slat Geometry
Flat, arched, vented, micro-perforated, or vision-glazed slat profiles extruded to custom architectural depths.
Architectural Finishes
Full RAL spectrum powder coatings, metallic PVDF, woodgrain sublimation, and Class 1 anodic oxide films.
Export Crating & Kits
Precision pre-assembled modular kits packed in steel-reinforced fumigated timber crates for zero-damage transit.
Industry Foresight
Future Procurement Trends in Industrial & Commercial Roll-Up Systems
Market intelligence for architects, quantity surveyors, and distributors navigating smart automation, sustainable building standards, and cyclic efficiency.
Smart IoT & BMS Integration
Modern European commercial facilities no longer accept standalone key-switch doors. Standard specifications require direct BACnet, Modbus, or KNX building automation interfacing, allowing central facility controllers to monitor cycle counts, automate scheduled ventilation, monitor security interlocks, and receive predictive maintenance alerts prior to motor brush wear or spring tension decay.
High-Speed Spiral Non-Contact Drums
Traditional roll-up doors coil with slat surfaces touching, causing cosmetic scratching and mechanical noise. The future belongs to spiral-guided helical overhead consoles where circular polyethylene tracks accept guide rollers, winding the curtain at speeds up to 1.5 m/s with zero metal-to-metal contact, extending finish life and delivering near-silent acoustic performance.
Low-Carbon Circularity & EPD Verification
Institutional tenders across Europe and Australasia strictly evaluate embodied carbon. The demand for Environmental Product Declarations (EPD) and hydro-powered low-carbon primary aluminium has surged. Our smelting and extrusion supply chains utilize closed-loop scrap recycling, reducing life-cycle carbon footprint by up to 65% compared to coal-powered smelters.
Procurement Playbook
B2B Architectural Buyer's Procurement Matrix
Eliminate ambiguity in international sourcing. Review the mission-critical technical checkpoints before signing off on commercial roll-up door tenders.
1. Dimensional & Headroom Audits
Assess lintel clearance and side-room dimensions. For restricted headroom, internal tubular motors with compact 250 mm – 350 mm roll boxes are ideal. For heavy-duty industrial spans exceeding 6 meters, external direct-mount side motors require dedicated lateral side clearance (minimum 200 mm to 350 mm).
2. Safety Regulations & Anti-Fall
In accordance with EN 13241-1 and EN 12604, power-operated vertical doors must feature certified inertial parachute brake catches (anti-drop inertia brakes) preventing curtain descent in the event of motor shaft or gear failure, supplemented by bottom-edge opto-electronic safety edges.
3. Electrical Drives & Manual Override
Select drives based on daily duty cycles. Standard residential operators accommodate 10-15 cycles daily. Heavy industrial distribution docks mandate 3-phase 400V continuous-rated helical geared motors equipped with quick-release manual emergency declutch cables or hand-chain pulleys.
Stringent Testing Protocols
Certified Compliance: CE, ISO 9001, AS 2047 & Fire Standards
Every roll-up door, commercial folding screen, and architectural pivot entryway leaving our Foshan factory undergoes rigorous factory acceptance testing (FAT). We maintain an in-house cyclical testing tower capable of continuous 100,000-cycle endurance verification under simulated pressure drops.
Our systems have been independently validated to international benchmarks, including Australian AS 2047 (N6 cyclone rating), European EN 14351-1 product standards, and UL fire door classifications. British luxury developers who have long relied on German brands like Schüco have successfully integrated DERCHI systems across multi-villa developments with full building control sign-off.
Technical Clarifications
Frequently Asked Questions by Industrial & Commercial Buyers
Transparent engineering answers addressing motor specification, export packaging, thermal validation, and warranty protection.
What makes aluminum roll-up doors superior to galvanized steel in coastal or high-corrosion environments?
Aluminium naturally forms a self-healing passive aluminium oxide layer (Al₂O₃) that prevents atmospheric oxidation even when exposed to marine salt spray, high humidity, and coastal airborne chlorides. Unlike galvanized steel, which eventually suffers sacrificial zinc depletion and structural red rusting, our 6063-T5 extruded profiles paired with Qualicoat Class 2 architectural powder coating or 20-micron anodization withstand over 3,000 hours of continuous acetic acid salt spray (AASS) testing without substrate pitting. Furthermore, aluminium curtains are approximately 40% to 50% lighter than equivalent gauge steel curtains, significantly reducing motor torque stress, counter-balance spring wear, and operational power consumption.
Can DERCHI customize roll-up door slat dimensions, perforation patterns, and RAL finishes?
Yes, full customization is a core pillar of our OEM/ODM operation. We offer custom slat heights (ranging from 45 mm, 55 mm, 77 mm to 100 mm heavy industrial profiles), dual-walled PU-insulated solid slats, continuous perforated ventilation slats (up to 38% free airflow for underground carparks), and transparent impact-resistant polycarbonate vision panels. For aesthetics, we formulate powder coating in any RAL Classic, RAL Design, or NCS hue, alongside custom woodgrain sublimation transfers and high-durability fluorocarbon (PVDF) finishes suited to harsh UV exposures.
How do you handle motorization, control voltage, and international electrical compliance?
Our drive systems are configured to destination electrical standards: 220V–240V 50Hz for Europe, the UK, and Australia; 110V–120V 60Hz or 208V/480V 3-phase for North America. We integrate high-reliability tubular motors for compact applications and heavy-duty industrial external chain-drive or direct-mount shaft motors for expansive logistics doors. All motor controllers feature CE, UL, or TUV certification, wireless remote frequencies (433.92 MHz with rolling encryption), optical safety edge sensors, photoelectric through-beam detectors, and manual emergency release levers with manual crank hooks.
What export packaging standards are used to prevent transit damage during ocean freight?
Every door curtain is fully wrapped in protective PE shrink film, interleaved with pearl cotton foam sheeting to prevent friction scuffing, and encased within heavy-gauge honeycomb carton corners. Entire door sets—including side guide channels, barrel shafts with internal torsion springs, hood boxes, and motor packages—are secured within fumigated ISPM-15 compliant solid plywood crates reinforced with interior steel strap tensioning. This export packing protocol eliminates container transit deformation during shipments to Rotterdam, Hamburg, Felixstowe, Long Beach, and Sydney.
What lead times, minimum order quantities (MOQ), and warranties apply to OEM/ODM orders?
For standard profile configurations in classic RAL finishes, our manufacturing turnaround is typically 15 to 22 business days following CAD shop drawing sign-off. Bespoke tooling for custom extrusion profiles requires an initial 10-day die manufacturing and sample extrusion window. Our factory supports trial sample orders (MOQ from 1 complete set for project evaluation) and high-volume containerized procurement (FCL 20GP/40HQ) with tiered container discounts. Structural aluminium frames and slat curtains are backed by a comprehensive 10-year warranty, with mechanical and electrical components covered by a 5-year replacement guarantee.
Partner with a Proven Industrial Door Manufacturer
Accelerate your project schedule with factory-direct engineering, certified structural integrity, and dedicated project management. Submit your architectural elevations, door schedules, or OEM specifications to receive comprehensive CAD shop drawings and pricing within 24 business hours.