Explore our export-certified custom stacking doors, hurricane-rated multi-slide barriers, and engineered window systems fabricated under ISO 9001 and rigorously validated to AS 2047, NFRC, and Miami-Dade NOA protocols.
A comprehensive technical investigation into structural deflection, load dispersion mechanisms, micro-gap fluid barrier thresholds, and thermal break mechanics for commercial and coastal fenestration envelopes.
DERCHI heavy-duty stacking panels utilize prime structural billet 6063-T6 or 6061-T6 aluminum alloys. Extrusion wall thickness ranges strictly between 2.0mm and 3.5mm across critical load-bearing profiles.
Engineered with reinforced internal webs and high cross-sectional moments of inertia (Ix ≥ 42.8 cm⁴), our vertical interlocks resist wind gust velocities exceeding 280 km/h without exceeding maximum architectural deflection limits (L/175 or L/240 according to AS 1170 and ASTM E330).
Condensation mitigation and energy transmission control require continuous mechanical decoupling. We integrate 24mm to 34mm technoform Polyamide 66 reinforced with 25% chopped fiberglass (PA66 GF25), crimped under automated knurling controls.
This barrier preserves mechanical shear strength (>75 N/mm) while dropping overall frame thermal transmittance (Uf) to 1.8 W/m²·K. Paired with triple-glazed IGUs featuring warm-edge spacers, system U-values reach under 1.2 W/m²·K (NFRC certified).
Effortless glide dynamics across massive sash weights (up to 450 kg per leaf) are driven by CNC-machined SUS316 stainless steel tandem carriages with quad-sealed ceramic/steel bearings.
Track assemblies feature replaceable hardened architectural stainless steel crowned caps that prevent localized pitting and roll-over galling. Systems maintain initial operating effort below 18N after 100,000 continuous cycle tests.
| Performance Parameter | Test Standard / Regulatory Norm | Standard Market Specification | DERCHI OEM Engineered Baseline | Extreme Impact / Cyclone Tier |
|---|---|---|---|---|
| Structural Wind Load (Uls) | AS 2047 / ASTM E330 / EN 12210 | 1500 Pa (Residential) | 3500 Pa (Serviceability Class N5) | 4500 Pa – 6000 Pa (Cyclonic C4 / Miami-Dade) |
| Water Penetration Resistance | ASTM E331 / AS 4420.5 / EN 12208 | 150 Pa – 300 Pa | 450 Pa Sub-sill cascading baffle | 700 Pa – 1050 Pa Cyclonic pressure baffle |
| Air Infiltration Rating | ASTM E283 / AS 2047 Level A | ≤ 1.5 L/s·m² | ≤ 0.5 L/s·m² (Triple Fin EPDM) | ≤ 0.1 L/s·m² Ultra-hermetic compression |
| Acoustic Attenuation (Rw / STC) | ISO 717-1 / ASTM E413 | Rw 28 – 32 dB | Rw 38 – 41 dB (Acoustic PVB) | Rw 44 – 48 dB Asymmetric laminate + Argon |
| System Thermal Transmittance (Uw) | ISO 10077-1 / NFRC 100 / 200 | 3.2 – 4.0 W/m²·K | 1.4 – 1.8 W/m²·K (Double Low-E) | 0.95 – 1.2 W/m²·K Triple Low-E Crypton/Argon |
| Forced Entry Security Class | EN 1627-1630 / AS 5039 / PAS 24 | Basic Cam Lock (RC1) | RC2 / Multi-Point Hook | RC3 / Heavy Anti-Jemmy Stainless Interlock |
Architectural facade engineering is shifting toward decarbonized extrusions, motorized building management connectivity, and ultra-narrow threshold ergonomics. Here is what leading procurement officers are specifying for upcoming projects.
Green building mandates (LEED v4.1, BREEAM Outstanding) increasingly demand low-carbon aluminum billets refined using renewable hydropower or certified post-consumer recycled content (≤4.0 kg CO2/kg Al). OEM buyers require certified Environmental Product Declarations (EPD) to satisfy strict sovereign carbon border adjustments (CBAM).
Barrier-free living directives (DIN 18040-1/2, ADA compliancy) are pushing the industry toward fully concealed floor tracks with sub-surface siphon hydraulics. Rather than step-over raised lips, modern multi-track stackers deploy hidden drainage trenches with magnetic flush covers that elevate only when the sash is seated.
Large-format multi-slide panels exceeding 350 kg per sash are rapidly transitioning from manual operation to concealed linear electromagnetic drive units. Stacking door systems now natively interface with Building Management Systems (BACnet, KNX) for automated natural purge ventilation and integrated weather-station closure triggers.
Architects demand maximum glazed visible light transmission (VLT) with vertical interlock stiles narrowing down to 20mm – 25mm. High-strength structural silicone bonding (SSG) allows the glass itself to function as a rigid diaphragm, shifting wind load directly across the panel without requiring massive aluminum framing profiles.
Headquartered in Foshan—the core of global precision aluminum engineering—DERCHI delivers full-chain extrusion, CNC fabrication, surface treatment, and global export packaging under stringent quality control.
As one of China's top tier-1 manufacturers, DERCHI operates high-precision automated CNC 4-axis machining centers, German dual-component corner crimping robots, and an automated vertical powder coating plant certified by Qualicoat Seaside standard.
Bespoke die customization, shop elevations, and parametric BIM models generated for project sign-off.
In-house chamber air-tightness, wind load deflection, and high-pressure water penetration checks.
German-tooled 4-axis milling centers ensuring sub-millimeter tolerances across all lock pockets and corner joins.
Export-grade steel-reinforced plywood A-crates ensuring zero damage across transatlantic and Pacific routes.
From architectural tender review through custom extrusion tooling, trial factory mock-up assembly, and overseas technical support, we maintain an audit-proof project pipeline.
Clients submit architectural schedules, opening dimensions, target U-values, wind zone requirements, and sill constraints. Our team issues complete shop drawings with connection details within 48 hours.
Custom or standardized architectural dies extrude premium 6063-T5/T6 billet. Profiles are knurled, insulated with PA66 GF25 strips, mechanically rolled, and hydrostatically checked for composite shear stability.
Profiles receive either Qualicoat Seaside certified AkzoNobel fluorocarbon powder coating (≥60μm), PVDF 3-coat marine finish (≥40μm), or 25μm architectural class-1 acid-etch anodizing.
Multi-track sills, jambs, and head frames undergo robotic corner-joint sealing and mechanical corner-key injection. A 100% pre-shipment trial dry-run verifies roller travel smoothness and zero daylight gaps.
Independent factory quality auditors check coating thickness, adhesion cross-cut tests, seal continuity, and multi-point hardware lock alignment against ISO 9001 certified batch punch-lists.
Panels are individually padded with protective PE film, corner-guarded, and secured into reinforced fumigated wooden A-frames. Comprehensive packing lists, CAD schedules, and installation manuals accompany delivery.
Detailed technical answers for fenestration estimators, facade structural consultants, and commercial building contractors.
A standard sliding patio door operates on a dual-track extrusion where only one panel slides past a single fixed panel, leaving a maximum of 50% clear opening. An architectural stacker features three, four, or five parallel tracks where multiple panels bypass sequentially to park neatly behind one another or slide completely into a concealed wall pocket. This achieves up to 75%–100% unobstructed opening widths while requiring advanced multi-tiered cascading sub-sill water management systems.
Wide multi-track openings (3-track, 4-track, or 5-track) present large surface catchments during driven rain. DERCHI implements a pressure-equalized stepped-sill extrusion where each progressive track sits on an elevated baffle relative to the exterior. Drainage weep valves feature UV-stabilized one-way flap louvers preventing wind-pressure siphon reversals. For extreme coastal locations, an integrated extruded sub-sill flashing collector transfers water out before it reaches internal floor finishes.
Yes. Our Florida-certified line is engineered to satisfy ASTM E1886 and ASTM E1996 large missile impact protocols (Missile Level D) and cyclic pressure sequences up to +70/-70 PSF design pressures for High-Velocity Hurricane Zones (HVHZ). These assemblies utilize reinforced structural interlocks with internal steel stiffeners, heavy-duty multipoint hook bolts, and laminated impact glass with 0.090" Kuraray SentryGlas (SGP) or Solutia PVB interlayers.
For installations within 500 meters of the coastline, we supply Qualicoat Seaside certified powder coatings utilizing AkzoNobel Interpon D2525 fluorocarbon-grade architectural powder or PPG Duranar 70% PVDF coatings resisting 3,000 to 5,000 hours of continuous ASTM B117 salt spray testing. We also offer architectural Class 1 anodized finishes (25 microns) with chemical sealing for industrial or high-salinity exposures.
Depending on panel dimensions and site installation preferences, we offer both fully glazed, assembled units and knock-down (KD) pre-machined systems. For assembled panels, doors are crated on heavy-duty, fumigated ISPM-15 compliant wooden A-frames lined with EPE foam and secured with heavy polyester strapping. For mega-format panels (>3500mm height), we provide KD kits with corner-joint hardware and pre-cut gaskets for local glazing on-site.
For standard architectural profiles with RAL color matching, production lead time is typically 25 to 35 business days following final CAD shop drawing approval. For bespoke custom extrusion dies, add 15 days for die fabrication and sample extrusion testing. Our MOQ is highly adaptable: we support project-based single villa custom door schedules as well as multi-container commercial hotel deliveries.
Submit your door schedules, project elevation drawings, or CAD specifications. Our senior fenestration engineers will provide structural wind load verification, preliminary U-value assessments, and a direct OEM factory proposal within 24 business hours.