Engineered Architectural Solutions for Iranian Envelopes
Precision-fabricated in our 180,000 m² Foshan manufacturing center. Every corner system, structural glass assembly, and thermal break profile meets stringent seismic, wind pressure, and thermal insulation requirements across Iran's commercial and luxury residential sectors.
180,000m²
Foshan Intelligent Production Base
1,000,000m²+
Annual Export Throughput
100+
Patented Technologies (4-Side 6-Point Lock)
18,000+
Completed Architectural Projects Worldwide
Architectural Engineering of Aluminium Corner Windows for the Iranian Market
In modern Iranian architecture, the transition from traditional, highly partitioned spatial envelopes toward continuous, biophilic panoramic fenestration has created an unprecedented demand for precision-engineered aluminium corner windows. Whether deployed in contemporary high-rise penthouses across District 1 of Tehran (Elahiyeh, Zaferaniyeh, Niavaran) or luxury residential villas in the Caspian coastal areas of Mazandaran and Gilan, the corner window is more than an aesthetic expression: it represents a complex structural challenge that eliminates vertical load-bearing columns at the intersection of two building planes.
As a premier manufacturer and exporter headquartered in the industrial heart of Foshan, China, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) engineers corner window systems utilizing virgin 6063-T6 and 6061-T6 architectural aluminium alloys. Corner fenestration fundamentally diverges into two structural paradigms: the Frameless Glass-to-Glass 90° Mitered Corner and the Heavy-Duty Polyamide Thermal Break Profile Corner. The frameless variant employs factory-mitered, structurally stepped insulated glass units (IGU) joined seamlessly with Dow Corning 983 two-component structural silicone sealant. This configuration maximizes unobstructed daylight transmission and uninterrupted horizon lines. Conversely, the thermal break profile corner incorporates extruded corner posts reinforced with internal galvanized steel stanchions, providing robust resistance against positive and negative wind pressure gusting up to 4500 Pa along exposed mountainous ridges and high-velocity sea fronts.
Thermal insulation represents the critical performance metric governing Iranian architectural approval. Iran's National Building Regulations Topic 19 (مبحث ۱۹ مقررات ملی ساختمان - Mabhas 19) mandates strict thermal conductance coefficients for outer wall assemblies. Traditional corner fenestrations frequently cause severe thermal bridging, localized cooling, and internal condensation during Iran's harsh continental winters. DERCHI mitigates this vulnerability by integrating imported Technoform multi-cavity PA66 GF25 (polyamide reinforced with 25% structural fiberglass) thermal barrier strips. Paired with argon-filled, double- or triple-pane Low-Emissivity glazing units, our corner fenestrations achieve exceptional overall thermal transmittance values as low as Ucw = 1.1 W/(m²·K), drastically reducing HVAC consumption in hot-arid and highland-cold climates alike.
Seismic Displacement Isolation
Engineered in compliance with Iran Standard 2800 (Seismic Code of Practice). Floating perimeter elastomer gaskets and deep glazing pockets accommodate inter-story drift without transferring torsional shear forces into the corner glass panels.
Mabhas 19 Energy Compliance
Multi-chamber thermal barrier extrusion lines prevent convection losses. Low-E coatings with specialized Solar Heat Gain Coefficients (SHGC 0.28 to 0.42) reflect high solar UV radiation while retaining interior thermal equilibrium.
Patented 6-Point Security
Equipped with DERCHI's proprietary Four-Side Six-Point Anti-Theft Lock invention patent, delivering RC3/RC4 burglar resistance across casement corners and operable adjoining sash configurations.
Localized Application Scenarios: Iran’s Microclimates and Facade Demands
Exporting architectural fenestration to the Islamic Republic of Iran requires a comprehensive understanding of diverse geographical, meteorological, and structural loading requirements. From the high seismic hazards of the Alborz fault lines to the high-humidity, marine-saline atmospheres of the Persian Gulf and Caspian Sea, standard stock profiles are insufficient. DERCHI designs project-tailored corner fenestrations explicitly calibrated to these four distinct architectural environments:
Tehran Metropolis
High-Rise Residential Penthouses
In upscale districts such as Sa'adat Abad, Kamranieh, and Niavaran, acoustic damping and air quality control are paramount. Heavy traffic creates continuous decibel pollution. Our corner systems integrate asymmetric acoustic laminated glass (6mm + 1.52PVB + 6mm + 16Ar + 8mm Low-E), achieving sound transmission loss exceeding 42 dB Rw while isolating fine PM2.5 dust particulate penetration.
Caspian Sea Littoral
Marine Humid & Saline Villas
The coastal strips of Mazandaran (Ramsar, Babolsar, Chalus) and Gilan experience continuous relative humidity above 85% and wind-driven subtropical rains. We specify marine-grade 25-micron Qualanod anodized or AkzoNobel Qualicoat Class 2 powder-coated finishes to resist salt spray corrosion, accompanied by cascade drainage sub-cills that evacuate torrential rainfall.
Central Plateau
Arid High-UV Regions (Isfahan, Yazd, Shiraz)
Arid desert environments demand extreme thermal protection against diurnal temperature swings ranging from -5°C at night to +48°C at midday. Multi-barrier EPDM vulcanized corner gaskets eliminate micro-fissure expansion, while solar-reflective double-silver Low-E coatings deflect solar irradiance, preserving indoor thermal comfort.
Southern Free Trade Zones
Persian Gulf Commercial (Kish & Qeshm)
The southern maritime industrial zones require robust hurricane and sandstorm resistance. Heavy-duty multi-slide corner door systems with recessed stainless steel running tracks prevent sand clogging, while laminated impact glass assemblies resist windward projectile impacts and sustained negative structural loads.
Technical Specification Matrix: Corner Window & Facade Systems
Below are verified physical performance parameters tested in accordance with international testing protocols (EN 14351-1, ASTM E283/E330/E331, and AS2047), configured for large-scale engineering procurement across Iran:
| System Type | Alloy & Thermal Barrier | Glazing Configuration | Thermal Transmittance (U-Value) | Acoustic Rating (Rw) | Wind Load Resistance | Water Tightness |
|---|---|---|---|---|---|---|
| DERCHI 90° Frameless All-Glass Corner | Butt-Glazed Structural Dow Corning 983 / Perimeter 6063-T6 | 10mm Tempered + 16Ar Warm Spacer + 10mm Low-E | 1.3 W/(m²·K) | 39 dB | 3500 Pa (Class 4) | 900 Pa (Class 9A) |
| DERCHI Titan-80 Thermal Break Corner Casement | Multi-Cavity PA66 GF25 (34mm Strip) / Extruded Corner Post | 6mm Low-E + 12Ar + 6mm Clear + 12Ar + 6mm Tempered | 1.1 W/(m²·K) | 43 dB | 4500 Pa (Class 5) | 1050 Pa (Class E1050) |
| DERCHI Horizon Lift-Slide Corner Opening System | Heavy-Duty 2.5mm Wall Thickness / Stainless Quad Rollers | 8mm Tempered + 1.52PVB + 8mm Tempered IGU | 1.4 W/(m²·K) | 38 dB | 3800 Pa (Class 4) | 750 Pa (Class 7A) |
| DERCHI Architectural Minimalist Slim-Profile Corner | Ultra-Slim 21mm Sightline Interlock / Concealed Subframe | 12mm Tempered + 18Ar + 12mm Low-E Laminated | 1.2 W/(m²·K) | 41 dB | 4000 Pa (Class 5) | 900 Pa (Class 9A) |
Foshan Intelligent Manufacturing Infrastructure: Zero-Tolerance Quality Assurance
Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) operates from a master production base encompassing over 180,000 square meters in Shishan Town, Nanhai District, Foshan. As the recognized manufacturing capital of high-grade architectural aluminium systems, our facility incorporates high-precision German elumatec multi-axis CNC double-head cutting saws, automated 4-corner crimping systems, and fully digitalized robotic glass handling lines. With over 600 skilled technicians, 30+ dedicated structural facade engineers, and an annual manufacturing throughput exceeding 1,000,000 m², DERCHI possesses the industrial scalability to support multi-tower phased residential developments and expansive luxury compounds across Iran.
Every aluminium corner window assembly destined for export undergoes our exhaustive 360-Degree Quality Verification System. Corner joints undergo pneumatic pressure-testing, 90-degree squareness tolerance checks under 0.2 mm deviation margins, and corner crimp shear tests. For frameless corner glass units, optical distortion scanning is conducted to eliminate roller wave effects, ensuring architectural-grade optical clarity when viewing expansive cityscapes or mountain vistas.
Our 8-Step Engineering & Export Verification Workflow
01
Drawing Audit
Structural review of architectural CAD/BIM models, structural deflection limits, and building boundary conditions.
02
R&D Engineering
Finite Element Analysis (FEA) modeling for wind loads, thermal bridge heat flux calculations, and seismic isolations.
03
Technical Proposal
Comprehensive submittal packages including die extrusions, glazing specifications, hardware schedules, and cost optimization.
04
Shop Drawing Signoff
1:1 fabrication detail drawings, anchor spacing diagrams, drainage plans, and perimeter sealing interfaces.
05
Material Batching
Procurement of certified 6063-T6 billet extrusions, polyamide barriers, and Saint-Gobain or Xinyi architectural glass.
06
Precision CNC Machining
Automated mitering, corner joint injection with two-component German polyurethane adhesive, and hardware routing.
07
Factory Pre-Assembly
Trial 90-degree corner dry-fitting in the workshop to verify zero-gap joint closures and smooth mechanical operations.
08
Marine Seaworthy Crating
Fumigated A-frame steel crating with desiccant protection and shock-proof rubber buffering for containerized sea shipment.
Procurement Guide & Customs Facilitation for Iranian Buyers
Shipping high-value, oversized fenestration systems from China to Iran involves structured logistical coordination and strict documentary compliance. DERCHI coordinates seamless sea freight transportation from Pearl River Delta container hubs (Guangzhou Nansha, Shenzhen Shekou/Yantian) directly to Bandar Abbas Port (Shahid Rajaee), with transit times averaging 18 to 24 nautical days. For northern destination projects in Rasht, Sari, or Tabriz, combined multimodal options via Incheh Borun or Bandar Anzali are evaluated.
To streamline customs clearance and commercial compliance with Iranian trade authorities, DERCHI provides full documentation sets including China Council for the Promotion of International Trade (CCPIT) certified Certificates of Origin, detailed commercial invoices, itemized packing lists with QR-coded bundle mapping, mill test certificates for 6063-T6 alloy composition, and laboratory test reports for international certifications including CE, ISO 9001, NFRC, and AS2047.
Frequently Asked Questions by Iranian Architects, Contractors & Importers
How does DERCHI ensure corner windows meet Iran Standard 2800 seismic drift requirements?
Our engineering team designs dynamic perimeter expansion joints with structural EPDM and vulcanized corner adaptors capable of absorbing lateral inter-story displacement without placing shear stress upon the corner glass panels. Corner posts utilize concealed, articulated internal steel anchors bolted into the structural floor slabs.
What thermal performance ratings can be achieved to satisfy Mabhas 19 building inspections?
By utilizing 34mm multi-chamber PA66 GF25 thermal breaks, warm-edge spacer bars, and triple-glazed units filled with 90% argon gas, our systems attain thermal transmittance ratings as low as Ucw = 1.1 W/(m²·K), exceeding the baseline requirements set forth in Topic 19 for climate Zone 1 through Zone 3.
How are frameless glass-to-glass 90-degree corners sealed against water ingress in rain-heavy Caspian areas?
The corner joint utilizes a precision factory-machined stepped glass configuration bonded with Dow Corning 983 two-component high-modulus silicone structural sealant. In coastal villas across Mazandaran and Gilan, an internal concealed secondary drainage channel collects any accidental condensation, diverting it to the outer sill under positive pressure.
Can you provide custom powder coatings matching specific luxury architectural palettes?
Yes. We partner directly with AkzoNobel and Tiger Drylac to offer Qualicoat Class 2 hyper-durable architectural powder coatings, metallic PVDF fluorocarbon coatings, and architectural anodized finishes in bronze, champagne, titanium grey, matte black, and custom RAL formulations, warranted for 20+ years against UV degradation.
What is the standard production and shipping lead time for projects in Tehran or Isfahan?
Following final signoff of engineering shop drawings and deposit confirmation, factory fabrication requires 25 to 35 business days depending on custom extrusion profiles and glass configurations. Ocean transit from Foshan/Shenzhen to Bandar Abbas takes approximately 18 to 24 days.
How are oversized glass panes protected against breakage during ocean transit?
All IGUs and assembled corner frames are crated in fully enclosed, fumigated solid wood cases or customized heavy-duty A-frame steel shipping pallets. Shock indicators, edge corner protectors, vacuum moisture bags, and desiccants are placed inside every package to eliminate movement and moisture damage during sea transport.
Do you provide on-site technical installation assistance or supervisor guidance in Iran?
Yes. DERCHI provides comprehensive 3D digital installation guidelines, anchor calculation schedules, and video tutorials for local construction crews. Additionally, for major residential towers and luxury villa developments, we can dispatch factory facade technical supervisors to oversee structural anchoring, corner alignment, and silicone tooling on-site.
What commercial payment channels and currencies are accepted for orders to Iran?
We support international project procurement through standard commercial export channels, including CNY (Chinese Yuan), EUR, or AED through verified international trading settlement companies, third-party letters of credit (LC) through regional intermediaries, and telegraphic transfer (T/T).
Can operable corner doors (e.g. lift & slide) be configured without a fixed corner post?
Yes. Our Horizon Open-Corner Lift-Slide System features two panels meeting directly at a 90-degree angle with dual interlocks. When both sliding panels are pushed open into their respective wall pockets, the entire corner opens up completely without any vertical mullion or post remaining, providing seamless indoor-outdoor connectivity.
What warranty terms are provided on DERCHI export fenestrations?
We deliver a 10-year comprehensive warranty on aluminum structural profiles and extrusion integrity, 10 years on insulated glass seal stability against fogging or gas leakage, and a 5-year warranty on European hardware systems (including Siegenia, Hoppe, and DERCHI patented locking mechanisms).
Engineer Your Architectural Corner Facade with DERCHI
Collaborate directly with our Foshan facade engineering team. Forward your architectural elevations, CAD drawings, and performance schedules for a detailed technical analysis, thermal compliance audit, and structural quotation within 24 hours.