Custom OEM Aluminium And Glass Window Manufacturers & Exporter

Our systems have undergone comprehensive independent testing at accredited laboratories. We hold Australian Standard AS2047 (Windows in buildings - selection and installation) and AS1288 (Glass in buildings); North American NFRC (National Fenestration Rating Council) thermal certifications and CSA standards; European Union CE markings complying with EN 14351-1; Energy Star efficiency ratings; and hurricane impact testing compliant with ASTM E1886, ASTM E1996, and Florida Building Code TAS 201/202/203. We provide certified laboratory test reports and engineering calculations with each major submittal package.

Our internal R&D engineering team calculates wind pressure values (both positive pressure and negative suction) based on regional building codes (e.g., AS/NZS 1170.2, ASCE 7, or EN 1991-1-4) taking into account building height, topography, terrain roughness category, and local cyclonic zoning. We determine the required Moment of Inertia (Ixx) along the critical bending axis of mullions and transoms, ensuring deflection does not exceed L/175 (or L/250 for spans supporting insulated glass units). Where needed, heavy steel reinforcement or high-moment internal aluminum tubes are inserted into profile cavities.

In hot, tropical regions (such as Southeast Asia, Florida, or the Middle East), our focus is on lowering the Solar Heat Gain Coefficient (SHGC < 0.25) and preventing condensation on interior cooled surfaces. We specify PA66 GF25 thermal breaks with high-performance double-glazed solar-control Low-E coatings placed on surface #2 to reflect solar infrared radiation, filled with 90% Argon. In cold northern climates (Canada, Northern Europe), we implement deep multi-cavity 34mm+ polyamide struts, warm-edge composite spacers, and triple-pane configurations featuring dual Low-E coatings (surfaces #2 and #5) with U-values down to 0.8 W/m²K (0.14 Btu/h·ft²·°F) to retain interior thermal energy.

Standard residential multi-point locks engage 2 to 3 locking points exclusively along the primary vertical opening stile. In contrast, our patented Four-Side Six-Point Lock integrates perimeter transmission drive bars that mechanically drive hardened mushroom cams into solid steel keep-plates on all four sides: head, sill, lock stile, and hinge stile simultaneously. This eliminates perimeter frame bowing under heavy typhoon suction loads, seals the continuous EPDM compression gaskets tightly against air and water ingress, and provides certified anti-jemmy forced entry security meeting European RC2/RC3 burglary resistance standards.

For coastal installations located within 1 km of the shoreline, we specify architectural 70% fluoropolymer PVDF resin-based finishes (complying with AAMA 2605 specifications) or Class 1 (25-micron) architectural sulfuric anodizing. These surface finishes withstand 3,000 to 4,000 hours of continuous acidified neutral salt spray testing (ASTM B117) with zero blistering, chalking, or gloss loss. All associated mechanical fasteners, hinges, rollers, and pivot pins are sourced in 316 or 304 marine-grade stainless steel to ensure zero galvanic corrosion when paired with our aluminum framing.

For custom profiles requiring new extrusion dies, die cutting, profile testing, and sample sign-off typically require 14 to 20 days. Once shop drawings and finish schedules are approved, full container-load production runs for our standard certified product systems (casement, sliding, bifold, curtain wall) typically require 25 to 35 business days. With a manufacturing base spanning 180,000 m² and an annual capacity surpassing 1,000,000 m², we have the multi-shift operational capacity to handle fast-track schedules for large-scale multi-unit commercial developments.

Transit damage risk is eliminated through engineered export packaging protocols. All profile surfaces are masked with peelable low-tack protective film. Corner joints receive rigid composite edge guards, and entire assemblies are wrapped in heavy-duty polyethylene shrink wrap. The units are then secured inside custom-engineered, fully enclosed fumigated plywood crates constructed from 15mm marine-grade panels with internal structural bracing and desiccant packs to prevent condensation. Crates are sized to optimize sea container loading and unload efficiently using forklifts or crane straps on job sites.

Yes. Our comprehensive B2B engineering package includes complete submittal packages with CAD cross-sections, anchor bolt pull-out calculations, glass thermal stress evaluations, and installation sequence manuals. For significant commercial contracts and luxury developments, DERCHI can dispatch bilingual senior installation engineers to provide on-site technical supervision, mock-up chamber testing verification, and contractor field training. We also support remote real-time video inspection to ensure flashing, perimeter air seals, and structural fastener torques conform strictly to design parameters.