Tested double-glazed, security-reinforced entrance doors customized for humidity resistance, thermal efficiency, and high architectural appeal in South Asian urban developments.
Bangladesh is experiencing an unprecedented structural infrastructure boom. Metropolitan centers such as Dhaka (Gulshan, Banani, Baridhara, Dhanmondi, Uttara) and Chittagong (Agrabad, Nasirabad, Khulshi) are seeing rapid construction of high-rise commercial towers, luxury residential duplexes, textile export headquarters, and modern hospitality establishments.
However, South Asian architectural conditions present severe technical challenges: high relative humidity, torrential monsoon rainfalls, elevated solar radiation (UV exposure), extreme thermal heat transfer, and intense urban noise pollution. Traditional wooden or uninsulated entry doors frequently suffer from swelling, rot, surface patina breakdown, and severe energy leakage under continuous air conditioning loads.
As a pioneer in architectural envelope manufacturing, DERCHI Doors and Windows bridges China's Industry 4.0 precision engineering with local Bangladesh building realities. We engineer heavy-duty, thermally broken aluminum and double-glazed glass entry doors designed specifically to resist wind pressure up to 3,000 Pa and prevent water penetration under tropical monsoon conditions.
How advanced glass physics, structural thermal breaks, and smart home automation redefine performance standards across South Asia.
Integrating double and triple-glazed Argon-filled units (6mm + 12Ar + 6mm) with silver double Low-E coatings. This engineering minimizes infrared heat radiation while allowing optimum daylight penetration, significantly lowering solar heat gain coefficient (SHGC) for tropical Bangladesh summers.
Extruded from high-grade 6063-T5 primary aluminum alloy infused with imported PA66 nylon thermal barrier strips. This structural break isolates indoor air-conditioned spaces from outdoor ambient heat up to 45°C, eliminating thermal bridge heat exchange.
Seamless integration with smart building ecosystems: German HOPO/ROTO hardware, heavy-duty hidden floor pivots capable of supporting 500kg leaf weight, 3D facial recognition, fingerprint access, dynamic smart glass (PDLC switchable privacy glass), and motorized multipoint lock systems.
Objective technical benchmarks verified through laboratory testing for architectural specifiers, structural engineers, and Bangladeshi procurement teams.
| Performance Parameter | DERCHI Glass Entry Door Series | Standard Local Aluminum / Wood Doors | Architectural Advantage for Bangladesh |
|---|---|---|---|
| Thermal Insulation (U-Value) | 1.6 – 2.2 W/(m²·K) | 3.8 – 5.2 W/(m²·K) | Reduces building HVAC cooling loads by over 30% in hot seasons. |
| Wind Pressure Load Resistance | Up to 3,000 Pa (AS2047 / N6 Grade) | 1,000 – 1,200 Pa | Withstands severe cyclonic winds during tropical bay storms. |
| Water Tightness Rating | 700 Pa Continuous Exposure | 150 – 250 Pa | Prevents water leakage during heavy Bangladesh monsoons. |
| Acoustic Noise Reduction (STC) | 35 dB – 42 dB Insulation | 18 dB – 22 dB | Blocks dense urban noise (traffic, honking, street crowd). |
| Hardware & Lock Lifespan | 100,000+ Cycles (German Hardware) | 15,000 – 20,000 Cycles | Zero sagging or jamming on oversized pivot doors. |
| Coating Durability | AkzoNobel / PPG PVDF (20 Year Guarantee) | Standard Anodized / Paint (Fades fast) | Resists UV chalking, peeling, and high coastal air salinity. |
Located in Foshan, Guangdong—the world’s premiere manufacturing cluster for architectural hardware and aluminum profile extrusions—DERCHI operates a massive 180,000 square meter intelligent manufacturing campus housing over 600 skilled technicians and automated robotic assembly lines.
By controlling every stage of production—from raw aluminum extrusion to automated CNC milling, double-glazed glass unit sealing, powder coating, dust-free assembly, and rigorous pre-shipment water-tightness testing—we eliminate sub-supplier markups and ensure 100% quality repeatability.
Precision lock slot cutting within ±0.1mm tolerance ensures zero installation misalignment on site.
Argon gas filled double-insulated glass units automatically sealed for zero internal fogging.
Every entry door leaf undergoes structural load and air penetration testing before crating.
Fumigation-free plywood box packaging guarantees zero glass breakage during sea shipping.
We streamline foreign procurement by providing step-by-step engineering support, custom shop drawings, and direct shipping routes into Bangladesh.
Our structural glass calculations and profile load tolerances align with the Bangladesh National Building Code (BNBC) for high-rise wind loads and seismic safety factor requirements.
Direct sea freight connections from Guangzhou/Shenzhen port to Chittagong Port (CTG) and Pangaon Container Terminal (Dhaka ICD) with complete commercial invoice & HS code paperwork.
Bangladeshi masonry work often has structural tolerances. We provide customized sub-frame profiles and step-by-step CAD shop drawings to ensure flawless site fitting into brick or concrete openings.
Submit door schedules & elevation drawings for fast engineering review.
Free millimeter-precise CAD cross-sections issued for architect approval.
CNC profile extrusion, thermal breaking, PVDF coating & glass sealing.
Rigorous seal testing, corner protection, and fumigation-free wooden crating.
Maritime container transport to Bangladesh ports & online installation support.
Whether you are designing an iconic villa in Baridhara or managing an EPC commercial project in Motijheel, we tailor our support to your exact priorities.
Preserving original design options: Arched, Modern Pivot, Hurricane-Proof, Sidelight Integrated, and Double Glazed Sliding Solutions.
Direct answers from our engineering team covering logistics, technical specifications, customization, and tropical monsoon durability.
Our entrance door systems utilize 6063-T5 high-density aluminum frames coated with 25-micron AkzoNobel PVDF fluorocarbon finishes, tested to withstand over 2,000 hours of continuous salt spray without corrosion or oxidation. Seal integrity is maintained through continuous EPDM multi-seal synthetic rubber gaskets that remain elastic between -30°C and +80°C, blocking driving monsoon rain up to 700 Pa water pressure load.
For high-solar locations in Bangladesh, we recommend our double-glazed insulated units consisting of 6mm low-iron tempered glass + 12mm Argon gas space + 6mm Double Low-E coated glass (6mm + 12Ar + 6mm). This combination reduces the Solar Heat Gain Coefficient (SHGC) down to 0.28 while achieving a thermal U-value of 1.8 W/(m²·K), significantly lowering indoor air conditioning electricity consumption.
Yes. DERCHI specializes in oversized pivot doors up to 2,000 mm in width and 4,000 mm in height. We supply heavy-duty stainless steel hydraulic bottom pivots rated for up to 500 kg door leaf weight. For export shipping, doors are fully assembled, tested, then dismounted and packed inside custom fumigation-free plywood crates lined with thick EPE protective foam to guarantee zero damage during ocean transit to Chittagong Port.
Absolutely. We pre-machine mortise lock pockets in our CNC center to accommodate top European, Asian, and international smart lock brands (including Yale, Samsung, Kaadas, Dormakaba, and custom TTLock/Tuya systems). Biometric fingerprint sensors, digital keypads, motorized multipoint lock rods, and face-recognition hardware can be factory-fitted prior to shipment.
Once final CAD shop drawings are signed off, custom manufacturing takes 25 to 35 calendar days depending on profile finish choices (PVDF coatings or specialized wood-grain transfers). Transit time via ocean freight from Guangzhou or Shenzhen port to Chittagong Port typically takes 10 to 14 days, providing a total lead time of under 7 weeks from order sign-off to site arrival.
Yes. We issue full 2D CAD cross-section drawings, 3D structural connection details, and step-by-step installation manuals for every opening. Our bilingual structural engineers are available via video call to support project installation teams on site during frame anchoring and pivot alignment.
Get factory-direct pricing, custom CAD shop drawings, and certified double-glazed glass entry doors engineered for lifetime performance.