Tested to extreme cyclical pressures, thermal differentials, and coastal humidity. Browse our flagship wholesale product configurations for commercial developments and luxury residential estates.
In high-density commercial developments and high-exposure coastal villas, casement windows represent the first thermal and aerodynamic shield of the building envelope. Unlike sliding systems that rely on brush seals susceptible to lateral pressure loss, casement windows utilize compression gasket sealing. When the multi-point handle is actuated, the sash is pulled with uniform mechanical pressure against vulcanized EPDM or Santoprene gaskets on the frame.
Our manufacturing protocols employ architectural-grade 6063-T6 virgin aluminium alloy billets with profile wall thicknesses ranging from 1.6mm for residential fenestration up to 2.5mm for high-span curtain wall casements. The structural core incorporates 24mm to 34mm fiberglass-reinforced Polyamide (PA66 GF25) thermal struts that physically detach the exterior aluminium shell from interior spaces, arresting thermal bridging and eradicating interior condensation in cold climates.
Analysis of global building code developments, decarbonization mandates, and high-performance building standards transforming the B2B aluminium fenestration landscape through 2030.
Global developers are mandating Environmental Product Declarations (EPDs). Sourcing is shifting toward primary smelting using renewable hydroelectric power and post-consumer recycled scrap (Hydro CIRCAL or 75R equivalents), reducing embodied carbon from 16.7 kg CO₂e/kg down to under 4.0 kg CO₂e/kg aluminium.
Architectural demand favours maximal daylighting ratios. Modern casement engineering integrates 180-degree concealed heavy-duty friction stays capable of supporting 130kg sash weights, concealing all visible hardware within the euro-groove while narrowing the visible perimeter aluminium to under 45mm.
Large-scale projects are rapidly transitioning from static Low-E glass to electrochromic switchable glass and automated linear actuators. Casement windows are now routinely pre-routed with concealed conduits to integrate directly into BACnet and KNX building automation systems for night-purge passive ventilation.
Direct comparison of critical structural, acoustic, and thermal performance values for international project specification.
| System Series | Profile Wall Thickness | Thermal Barrier (PA66) | Glazing Pocket | Acoustic Rating (Rw) | Thermal U-Value (Uw) | Testing Standard |
|---|---|---|---|---|---|---|
| 65 Architectural Casement | 1.6 mm - 1.8 mm | 20 mm Strip | Double (5+12A+5mm) | 34 dB - 36 dB | 1.8 - 2.1 W/m²·K | CE EN 14351 |
| 75 Extreme Coastal System | 2.0 mm | 28 mm Multi-Chamber | Triple (6+12Ar+6+12Ar+6) | 38 dB - 42 dB | 1.3 - 1.5 W/m²·K | AS 2047 N6 |
| 90 Passive House Casement | 2.2 mm - 2.5 mm | 35 mm Cellular Foam Filled | Triple Warm-Edge Spacer | 43 dB - 46 dB | 0.85 - 1.1 W/m²·K | PHIUS / NFRC |
| Narrow-Stile Heritage Pivot | 2.0 mm | Non-Thermal / Slim Break | Double Laminated (6+0.76+6) | 32 dB - 35 dB | 2.4 - 2.8 W/m²·K | ASTM E330 |
Recognized as one of China's Top 10 fenestration enterprises, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) operates from Foshan—the world’s epicentre for precision aluminium metallurgy.
Continuous German Elumatec 5-axis CNC machining, automated corner crimping lines, and robotic sealant application delivering 50,000+ sqm monthly output.
Equipped with calibrated environmental testing chambers measuring air permeability (ASTM E283), water infiltration (ASTM E331), and sound transmission (ASTM E90).
Certified across European CE, Australian AS2047, American NFRC, and UL fire classifications, backed by third-party testing reports from Intertek and TÜV Rheinland.
Dedicated team of 40+ structural facade engineers providing complimentary CAD shop drawings, wind load calculations, BIM models, and tailored extrusion design.
Clear, direct answers regarding technical specifications, global shipping logistics, surface finishes, and quality verification protocols.
For installations within 3km of saltwater coastlines, we strictly specify fluorocarbon PVDF coatings (KYNAR 500 / HYLAR 5000 resin compliant with AAMA 2605) or minimum 25-micron architectural anodizing (Qualanod Class 1). These finishes withstand over 4,000 hours of continuous acetic acid salt spray (AASS) testing without blistering, chalking, or color fading.
Galvanic reactions occur when dissimilar metals contact in the presence of an electrolyte. Our production process isolates all 304/316 stainless steel friction stays, corner brackets, and fastening screws using non-conductive nylon shims, EPDM isolators, or Dacromet/Geomet anti-corrosive organic coatings, ensuring zero metal-to-metal degradation.
Windows are packed using our 5-tier export system: 1) Protective static film on aluminium surfaces, 2) EPE foam wraps protecting frame profiles, 3) High-density polyethylene corner caps, 4) Heavy-duty corrugated cardboard boxing, and 5) Fully enclosed ISPM-15 compliant fumigated plywood crates with internal anti-vibration rubber buffers.
Yes. 100% of our export projects are manufactured to custom project schedules. Our engineering department reviews architectural elevation schedules, calculates expansion tolerances based on structural substrate (concrete, steel framing, timber), and generates millimetre-exact shop drawings before extrusion and glass fabrication begin.
Outward-opening casements provide maximum internal usable space and superior storm water tightness, as positive exterior wind pressure drives the sash tighter against the frame gasket. Tilt-and-Turn systems offer dual-function ventilation and easy indoor cleaning of exterior glass panes, making them preferable for mid-to-high-rise residential developments without external access gantries.
We partner directly with tier-one European and international architectural hardware manufacturers including Siegenia, Roto Frank, Sobinco, and CMECH. Casement assemblies feature dual-arm or four-bar stainless steel friction stays, mushroom-head locking cams, and anti-jemmy keeps strategically arrayed across all four perimeter sides to meet PAS 24 and RC2 burglar resistance standards.