EN 14351-1 Standard · Architectural Fenestration

CE Certified Aluminium Patio Doors Manufacturer & Factory

Precision-engineered multi-track sliding, accordion folding, and heavy-duty lift-slide systems compliant with European Union Construction Products Regulation (CPR 305/2011).

Export-Grade Portfolio

Engineered Aluminium Patio Doors & Architectural Glazing

Explore our factory-direct CE certified door systems. Fabricated with virgin 6063-T6 primary aluminium alloys, high-performance polyamide thermal break barriers, and premium double/triple tempered insulated glazing units (IGU).

CE / NFRC EOKO Custom Double Glazed Aluminum Windows and Sliding Doors
EOKO Custom Windows and Doors Double Glazed Aluminum Casement Windows and Sliding Doors for America Villa Project
  • Thermal Uw: ≤ 1.4 W/(m²·K)
  • Air Permeability: Class 4 (EN 12207)
  • Glazing Spec: 5mm+12Ar+5mm Low-E
NFRC Tested Thermal Break Aluminum Folding Door with Screen
NFRC Thermal Break Aluminum Folding Door Aluminum Large Folding Patio Doors Exterior with Retractable Insect Screen
  • Polyamide Strut: PA66 GF25 24mm
  • Water Tightness: Class 9A (EN 12208)
  • Flyscreen: Integrated Accordion Mesh
Acoustic 42dB Soundproof Thermal Break Aluminum Security Entrance Door
Aluminum Entrance Door Soundproof Thermal Break Aluminum Front Door Exterior Security Door Custom
  • Sound Rating: Rw 42 dB Acoustic
  • Security Level: RC3 / RC4 Rated
  • Invention Lock: 4-Side 6-Point Perimeter
Ultra-Slim 22mm Modern Style Slim Frame Exterior Accordion Folding Door
Modern Style Slim Frame Exterior Interior Accordion Folding Door Aluminum Bi-folding Glass Doors Sliding Door
  • Stile Width: 22mm Ultra-Narrow
  • Sash Capacity: Up to 350 kg/Panel
  • Track Setup: Concealed Flush Threshold
Architectural Grade HENNISSY Modern Aluminum Interior Casement Bedroom Door
HENNISSY Modern Graphic Design Aluminum Casement Door High-End Custom Residential Interior for Villa Houses for Bedrooms
  • Hardware: Concealed 3D Hinges
  • Coating: Fluorocarbon PVDF Finish
  • Sealing: EPDM Co-extrusion
AS2047 / Impact Exterior Safety Impact Double Glass Aluminium Entry Doors
NFRC AS2047 Manual Finished Exterior Safety Impact Entry Doors with Double Glass Aluminium Frame for Bedroom and School
  • Impact Class: ASTM E1996 Missile D
  • Wind Pressure: Class C5 (≥ 4500 Pa)
  • Glass Unit: 6mm+1.52PVB+6mm Lami
B2B Wholesale HDSAFE Wholesale Aluminum Glass Interior Swing Door
HDSAFE Wholesale Aluminum Swing Door Glass Interior Single Double Casement Door for Kitchen Bedroom Bathroom Toilet Glass Door
  • Frame Profile: 6063-T5 Alloy 2.0mm
  • Cycle Fatigue: 100,000 Action Passes
  • Glass Style: Fluted / Frosted / Clear
Panorama Bi-Fold Balcony Accordion Exterior Aluminum Folding Patio Doors
Balcony Accordion Bifold Door Design Exterior Aluminum Folding Patio Doors
  • Opening Ratio: Up to 95% Clear Width
  • Roller System: SUS316 Quad Bogie
  • Weather Resistance: Isobaric Drainage
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Enterprise Pedigree & Plant Capacity

World-Class Fenestration Engineering: Foshan Industrial Hub

Operated by Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI), our facility serves general contractors, developers, architects, and trade importers worldwide with uncompromising technical precision.

180,000m²
Intelligent Production Base
1,000,000m²+
Annual Fabricated Capacity
100+
Proprietary Patents
18,000+
Global Landmark Deliveries

Certified Factory Production Control (FPC) Aligned with EN 14351-1

Operating out of Nanhai District, Foshan—the epicenter of global architectural aluminum extrusion—DERCHI merges 25+ years of specialized fenestration manufacturing with rigorous German-standard CNC routing, corner-crimping precision, and end-to-end quality tracking.

Recognized by Xinhua News Agency as an official "China Brand" Certified Enterprise, our facility maintains active compliance audits across the European Union (CE Marking), North America (NFRC, CSA), and Australasia (AS2047). We provide fully traceable Declarations of Performance (DoP), structural calculations, and isobaric drainage designs for challenging residential and high-rise commercial installations.

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    Patented Four-Side Six-Point Perimeter Locking: Engineered with hardened steel transmission rods and anti-lift mushroom cams to achieve stringent RC2/RC3 European burglar-resistance ratings.
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    Automated 360° Optical Dimensional Auditing: Every cut sash, thermal chamber insertion, and corner joint undergo automated laser calibration to guarantee sub-millimeter tolerances on shop drawings.
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    In-House Test Laboratories: Physical chamber rigs replicating extreme static air pressure, dynamic pulsed wind gusts up to 5000 Pa, and driving torrential water deluges (Class E1200).

Testing & Compliance Matrix

EU Harmonized Code EN 14351-1:2006+A2:2016
CE Certification Construction Products Reg. (CPR)
Air Infiltration EN 12207 Class 4 (≤ 3 m³/h·m²)
Water Penetration EN 12208 Class 9A / E1200 (≥ 1200 Pa)
Wind Load Deflection EN 12210 Class C5 / B5 (≥ 3000 Pa)
Thermal Insulation EN ISO 10077-1 / EN ISO 10077-2
Security / Intrusion EN 1627 - EN 1630 (RC2 / RC3)
Factory Audit ISO 9001:2015 / ISO 14001:2015
Strategic Market Foresight

Future Procurement Trends in Aluminium Patio Doors

Commercial fenestration procurement is shifting rapidly under the pressure of the EU Energy Performance of Buildings Directive (EPBD), mandatory Environmental Product Declarations (EPD), and building digitization.

1. Embodied Carbon & EPD Auditing

Corporate project developers in Germany, Scandinavia, and France now require low-carbon primary aluminium billets smelted with renewable hydro-energy, targeting threshold values below 4.0 kg CO2e per kg Al.

Procurement contracts increasingly mandate ISO 14025 verified Environmental Product Declarations (EPD) to satisfy BREEAM Outstanding, LEED Platinum, and DGNB Gold certifications. B2B buyers must prioritize manufacturers running closed-loop post-industrial aluminium recycling programs.

2. Mechatronic Drives & Smart Building Integration

Patio door specifications are rapidly transitioning from manual deadbolts to fully integrated mechatronic actuators. Heavy multi-slide and bi-fold sashes weighing 300 to 500 kg require concealed linear drive systems.

Modern commercial projects demand RS-485, KNX, or BACnet protocol integration, enabling central BMS (Building Management System) operation for night purge cooling, rain-sensor automated sash closure, and biometric access verification without external surface-mounted motors.

3. Modular Offsite Glazing & Rapid Docking

On-site labor shortages across Europe, North America, and Australia have turned field installation into a major budgetary bottleneck. Global general contractors are procuring pre-glazed, sub-assembled modular patio door units.

Systems engineered with pre-fitted perimeter expanding weather seals, snap-in sub-sill flashing pans, and factory-torqued anchor tabs cut on-site façade closure timelines by up to 60%, drastically mitigating risks associated with jobsite siliconing failures.

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Engineering White Paper

Technological Frontiers in High-Performance Patio Doors

A granular analysis of multi-chamber thermal breaks, high-load structural kinematics, acoustic decoupling, and surface nanotechnologies engineered for extreme coastal and urban environments.

Multi-Chamber Polyamide Break & Passive House Thresholds

The historic trade-off in architectural aluminium patio doors was between structural wind resistance and thermal insulation. Standard aluminum exhibits a thermal conductivity (λ) of roughly 160 to 200 W/(m·K), acting as a massive thermal bridge if unaddressed.

Modern CE-compliant patio doors from our Foshan facility overcome this through engineered 24mm to 34mm PA66 GF25 (25% glass fiber reinforced) structural thermal struts. By subdividing the isolation cavity with multi-chamber insulating polyurethane foam inserts (low-density PE cores) and low-emissivity radiation reflection foils, frame U-values (Uf) drop down to 1.1 W/(m²·K). When paired with warm-edge composite spacers (such as Technoform or Swisspacer Ultimate) and triple-pane krypton/argon-filled IGUs featuring dual soft-coat Low-E layers, total system U-values (Uw) routinely achieve ≤ 0.85 W/(m²·K)—satisfying Passive House criteria.

Thermal Break Architecture Frame U-Value (Uf) Standard IGU Config Total Door Uw Condensation Resistance (CR)
Non-Thermal Industrial (Baseline) 6.5 W/(m²·K) 6mm Single Tempered 5.4 W/(m²·K) CR 18 (Severe condensation)
Standard Polyamide (14.8mm) 2.8 W/(m²·K) 5+12Ar+5 Double Low-E 1.8 W/(m²·K) CR 52 (Moderate climate safe)
Enhanced Multi-Chamber (24mm PA66) 1.6 W/(m²·K) 6Low-E+16Ar+6 Double Low-E 1.3 W/(m²·K) CR 68 (Cold climate compliant)
Aerogel / Foam Infused (34mm PA66) 1.05 W/(m²·K) 5Low-E+14Ar+5+14Ar+5Low-E 0.82 W/(m²·K) CR 78+ (Passive House ready)

Hardware Kinematics, Acoustic Isolation & Surface Metallurgy

Precision Tandem Bogies

Equipped with SUS316 marine-grade stainless steel casings and needle-bearing roller wheels. Tested to 100,000 cycles without deflection under dynamic panel dead-weights exceeding 400 kg.

Acoustic Decoupling

Asymmetric glass layups combined with acoustic polyvinyl butyral (PVB) or SentryGlas interlayers dampen low-frequency urban traffic rumble, achieving verified sound insulation indices up to Rw 45 dB.

Qualicoat Class 2 / PVDF

Superior hyper-durable thermosetting architectural powder coatings and 3-coat Kynar 500 PVDF finishes withstand over 3,000 hours of continuous neutral salt spray (ISO 9227) in C4/C5 marine environments.

Continuous EPDM Sealing

Vulcanized continuous corner gaskets eliminate joint gaps. Co-extruded cellular sponge and solid EPDM profiles maintain elasticity at -40°C to +85°C, securing hermetic air tightness over decades.

Procurement Due Diligence

B2B Buyer Technical FAQ: Compliance, QA & Logistics

Straightforward, engineering-backed answers covering European CE documentation, structural wind calculations, sea container packing protocols, and custom architectural fabrication.

Q1 What documentation verifies CE compliance under EN 14351-1 for European customs and building inspectors?
Every shipment is accompanied by a formal Declaration of Performance (DoP) citing the Harmonized Standard EN 14351-1:2006+A2:2016, alongside our Factory Production Control (FPC) audit certifications. We furnish accredited third-party notified body laboratory test reports demonstrating verified performance classes for Watertightness (EN 12208), Air Permeability (EN 12207), Resistance to Wind Load (EN 12210), and Thermal Transmittance (EN ISO 10077). CE rating labels are affixed directly to the inner rebate of each sash.
Q2 How does the factory prevent galvanic corrosion between aluminum extrusions and structural steel hardware?
Direct contact between dissimilar metals (e.g., aluminium and carbon steel) generates rapid galvanic corrosion under electrolytic conditions. Our assembly protocols dictate that all fasteners, hinges, rollers, and lock cases must be austenitic AISI 304 or 316 stainless steel. Whenever steel anchors or sub-frames connect to aluminium profiles, insulating EPDM isolation pads, polyamide thermal shims, or non-conductive nylon sleeves are mechanically inserted to eliminate electrical conductivity.
Q3 Can your engineering team produce full structural calculations and shop drawings for our project?
Yes. Our in-house technical department includes 30+ dedicated façade engineers and drafting technicians. We operate an 8-step engineering protocol: we review architectural CAD/BIM models, calculate wind pressure deflections (limiting allowable mullion deflection to L/175 or L/250 according to local building codes), engineer glass pane thicknesses against thermal stress fractures, and generate full 1:1 scale shop drawings detailing perimeter fixing anchors, waterproofing membranes, and structural floor connection details for municipal approval.
Q4 What is the maximum achievable panel dimension and glass weight for oversized panoramic patio doors?
For our flagship motorized and heavy-duty manual lift-and-slide systems, we engineer individual sash panels up to 3,800 mm in height and 3,200 mm in width, with maximum individual panel weights reaching 500 kg. For accordion bi-folding systems, maximum individual leaves span up to 3,000 mm high and 1,200 mm wide (up to 150 kg per sash). Structural interlock stiles are reinforced with internal steel core stiffeners to withstand high-altitude wind suction without unsightly exterior mullions.
Q5 How are heavy glazed units secured against damage, moisture, and shifting during international ocean freight?
We utilize heavy-duty fumigated steel A-frames and fully enclosed custom plywood crates lined with waterproof membrane sheeting. Glass units and frame profiles are separated by non-residue cork spacer pads and dense EPE pearl cotton buffers. Desiccant packs are vacuum-sealed inside crate liners to eliminate maritime humidity condensation and glass surface bloom. Crates are mechanically strapped with high-tensile steel banding directly to container floor D-rings to withstand rough open-ocean rolling.
Q6 What primary aluminium alloy specifications and temper ratings are utilized across your profile systems?
We fabricate exclusively with virgin metallurgical 6063-T6 and 6061-T6 architectural aluminium alloys (conforming to EN 573-3 and ASTM B221). We strictly forbid the use of unrefined scrap aluminium or secondary remelt ingots in our primary structural extrusions. Minimum wall thicknesses conform strictly to 2.0 mm for sliding doors and 2.5 mm to 3.0 mm for heavy-duty commercial entrance pivot stiles, guaranteeing mechanical shear strength and long-term fastener thread retention.
Q7 Can your patio door systems accommodate motorized automated operation and smart building sensors?
Yes. Our multi-slide and pocket patio door profiles can be factory-prepped with internal concealed wire chases, magnetic reed contact switches for burglar alarm monitoring, and heavy-duty 24V DC brushless motor tracks. The systems interface smoothly with central automation standards like KNX, Crestron, Control4, and dry-contact smart wall switches, featuring safety photocell curtains that automatically reverse panel movement upon detecting obstacles.
Q8 What are the standard lead times for custom architectural fabrication and sample verification?
For custom project orders requiring standard RAL powder-coated finishes (e.g., Anthracite Grey RAL 7016, Jet Black RAL 9005), standard production timelines are 30 to 40 calendar days from formal sign-off of shop drawings and deposit receipt. For complex projects requiring custom die extrusion tooling, fluorocarbon PVDF matched tones, or custom curved glass laminates, lead times are approximately 45 to 55 days. Rapid physical corner joint and hardware sample kits can be dispatched via air freight within 7 business days.
Q9 How does the factory handle barrier-free zero-step thresholds while maintaining water tightness?
We employ our patented submerged drainage sub-channel threshold design conforming to DIN 18040-2 barrier-free access regulations (step height ≤ 20 mm). The internal floor level seamlessly aligns flush with the exterior patio deck. Wind-driven rainwater collects inside an integrated lower stainless steel linear drainage trough, flowing outwards through one-way silicone flap valves into the exterior French drain system, preventing back-siphoning under dynamic wind load up to 600 Pa.
Q10 What warranty terms and after-sales spare parts support are extended to overseas commercial developers?
We back our export products with a standard 10-year comprehensive structural warranty on all aluminium extrusion profiles and surface powder coatings against peeling, blistering, and cracking. Insulated glass units carry a 10-year hermetic seal failure warranty against internal fogging. Mechanical running gear, multi-point lock mechanisms, and motor assemblies carry a 5-year replacement guarantee. We provide a 3% complimentary buffer package of replacement rollers, gaskets, and locking handles inside each container shipment.

Accelerate Your Next Architectural Glazing Project

Direct factory engineering collaboration, certified structural performance, and significant cost advantages for real estate developers, contractors, and trade wholesalers. Request comprehensive CAD sections, wind load calculations, and complete price schedules.

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