CE Certified Aluminium Frameless Windows Factories & Suppliers

To verify authentic CE compliance under European Standard EN 14351-1 (Windows and external pedestrian doorsets), buyers must request three primary documents: First, a genuine Declaration of Performance (DoP) issued by the manufacturer stating product type and intended use. Second, the Initial Type Testing (ITT) test reports conducted by an accredited European Notified Testing Body (such as ift Rosenheim, CSTB, or KIWA) validating airtightness, watertightness, wind load resistance, and thermal transmittance. Third, documentation proving continuous Factory Production Control (FPC) audited under ISO 9001. A mere self-declaration from a supplier without accredited lab test records is legally non-compliant for installation within the EU.

Concrete slab live loads, concrete creep, and seasonal thermal expansion will cause ceiling and floor deflections of 15 mm to 25 mm in multi-story structures. Frameless systems cannot withstand direct structural loading without glass pinching or catastrophic roller binding. We engineer deep two-piece telescopic top head profiles with internal EPDM compensation cavities. This allows up to ±20 mm of independent vertical slab movement while completely isolating the glass panel and maintaining airtight weather seals and motorized functionality.

Oversized architectural panels (often exceeding 3,000 mm × 4,500 mm and weighing 800+ kg) require engineered marine shipping procedures. DERCHI fabricates custom fumigated steel A-frames and fully enclosed heavy-timber export crates lined with high-density EPE shock foam and vapor barrier film containing industrial desiccant. We mount crates inside specialized 40ft High Cube (OT) Open-Top containers or Flat Rack platforms with calibrated nylon cargo lashings. Each crate is equipped with three-axis ShockDot impact sensors and tilt indicators to detect dynamic shock events during ocean transits.

To achieve ultra-narrow central interlock sightlines (down to 18 mm – 25 mm), standard aluminum profiles are structurally insufficient. Our engineering team utilizes carbon-fiber reinforced profiles or solid internal stainless steel mullion stiffeners encased within the ultra-slim aluminum shell. This design elevates the moment of inertia (Ix) dramatically, enabling the window to withstand positive and negative design pressures exceeding 3,500 Pa (equivalent to 240 km/h wind speeds) without glass deflection exceeding the L/175 safety limit.

Custom architectural production follows our transparent 8-step quality lifecycle: Architectural drawing review and structural loading calculation (Days 1–5); CAD shop drawings, connection detail sign-off, and finish sample approvals (Days 6–14); CNC extrusion milling, thermal break crimping, and tempered IGU fabrication (Days 15–35); Full mock-up test assembly, 360° QC inspection, and crating (Days 36–42). Average factory lead time is 35 to 45 business days from approved shop drawings, followed by sea freight transit tailored to target destination ports.

For coastal installations facing high salinity air, or Middle Eastern desert zones subject to 60°C surfaces and intense UV radiation, standard coatings rapidly chalk or blister. We specify Qualicoat Class 2 or Class 3 super-durable architectural powder coatings (using AkzoNobel or Tiger Drylac resins) or minimum 25-micron Qualanod architectural anodizing. Hardware bearings, tracks, and fasteners are strictly specified in marine-grade 316 stainless steel, backed by salt-spray chamber testing exceeding 3,000 continuous hours according to ISO 9227 standards.