EN 14351-1 Technical Specification

CE Certified Aluminium Kitchen Doors Manufacturer & Supplier

Industrial-grade precision, thermal break acoustic insulation, and custom architectural door systems engineered for residential and commercial culinary spaces.

Technical Whitepaper

Engineering Principles of CE-Certified Kitchen Door Systems

Modern architectural kitchens operate under extreme microclimates—combining grease exposure, high internal humidity, and thermal variance between climate-controlled living rooms and cooking quarters. Specifying true CE-marked aluminium profiles ensures long-term operational integrity and life safety.

Alloy Metallurgy & EN 12020 Compliance

DERCHI kitchen systems are extruded from architectural-grade 6063-T5 and 6063-T6 virgin aluminium billets. Unlike uncertified alternatives utilizing high scrap content, our alloys maintain strict chemical purity, achieving tensile strength exceeding 160 MPa and elongation rates that prevent frame micro-fissuring under continuous cycle stress.

Polyamide Thermal Barriers (PA66 GF25)

Thermal condensation along kitchen doors invites microbial growth and frame discoloration. We integrate 24mm to 34mm glass-fibre reinforced polyamide (PA66 GF25) thermal break strips within our aluminium jambs and stiles, delivering U-values down to 1.3 W/m²K to permanently decouple internal moisture zones from external or exterior air pockets.

Hermetic Perimeter & EPDM Gasketing

Vapor, aerosolized oils, and aroma transmission require complete mechanical isolation. Our systems employ continuous, vulcanized cellular EPDM multi-chamber gaskets. Resistant to heat deterioration and acidic compounds, this system guarantees air permeability classification up to Class 4 under European testing norm EN 12207.

Manufacturing Infrastructure

Guangdong Dejiyoupin Doors & Windows Co., Ltd.

With over 25 years of specialized door and window engineering, DERCHI operates one of Asia's most advanced architectural manufacturing hubs in Foshan, China. We bridge European certification rigor with direct-from-factory value for global contractors and developers.

180,000
Square Meter Plant
600+
Skilled Workforce
100+
Patents & Certifications
25+
Years Manufacturing Heritage

Bespoke CAD/BIM Detailing

Our dedicated engineering department converts complex architectural door schedules into fully realized structural shop drawings and BIM components within 48 hours.

Certified Testing Authority

Beyond our CE approvals, our factory-engineered configurations achieve AS 2047 N6 cyclonic wind testing, ISO 9001 compliance, and UL fire ratings verified by third-party testing bodies.

End-to-End Processing

From primary aluminium alloy melting and extrusion to automated multi-axis CNC milling, glass tempering, and gas-filled IGU assembly—every process is kept completely in-house.

Consolidated Freight Handling

We pack every custom order inside reinforced, moisture-sealed export timber crates designed for overseas container shipping, preventing surface abrasions and track distortion during transit.

Procurement Advisory

Frequently Asked Questions by Commercial Buyers

Essential technical, compliance, and logistics clarifications for project specifiers, general contractors, and door distributors sourcing direct from the factory.

What specific EN test criteria govern CE certification for aluminium kitchen doors? +
Under EN 14351-1 (Windows and Doors Harmonised Standard), CE certification verifies wind load resistance (EN 12211/12210), water tightness (EN 1027/12208), air permeability (EN 1026/12207), and operating forces (EN 12046-2). For internal kitchen division walls, acoustic attenuation (EN ISO 10140-2) and thermal transmittance (EN ISO 10077-1) confirm system compliance with EU building energy codes.
Can DERCHI fabricate kitchen doors to custom imperial and metric rough openings? +
Yes. Every order is manufactured 100% to project specifications. Whether working from millimetre architectural dimensions or US customary fractions (inches), our design office produces shop drawings detailing perimeter tolerance gaps, sub-frame fixings, and structural shim spaces tailored to your rough opening.
How does the factory prevent roller degradation from kitchen oils and grease? +
Kitchen aerosolized grease quickly degrades open nylon wheels. DERCHI uses fully enclosed, sealed stainless-steel (grade 304 or 316) ball-bearing wheel carriages housed inside protective extruded bottom rails. The tracks feature self-cleaning angled gutters that prevent lint, dust, and grease buildup from obstructing the roller path.
What glass configurations are recommended for acoustic kitchen separation? +
To isolate cooking ventilation and kitchen appliance noise while preserving open-plan daylighting, we advise 6mm Low-E Tempered + 12A (Argon gas) + 6mm Acoustic PVB Laminated Glass. This assembly achieves Sound Transmission Class (STC) ratings above 38 dB while ensuring compliance with human impact safety codes.
What is the standard production timeline and packaging for overseas freight? +
Standard production runs require 25 to 35 calendar days following client sign-off on shop drawings and sample finishes. Each door panel is wrapped in protective PE film, corner-guarded with high-density EPE foam, and encased within IPPC-certified fumigated structural plywood crates with built-in forklift pockets.
Can multi-panel bi-fold kitchen doors fold completely flat against perimeter walls? +
Yes. Our heavy-duty folding systems utilize continuous pivot hinges and articulated top guides that allow multi-panel leaf stacks (up to 8 panels per side) to pivot 90 degrees and pack tightly against boundary walls, creating a 95% unobstructed opening between interior kitchens and exterior patio dining areas.

Accelerate Your Project with Factory Engineering Support

Direct factory communication ensures zero technical discrepancies between your architectural intent and final assembly. Connect with our senior engineering desk for custom door schedules, structural calculation packages, and direct B2B supply quotations.

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