Vertical Slide Series
Derchi Vertical Slide up Sash Windows American Double Hung
Engineered balance mechanism, concealed spiral balances, Low-E thermal dual glazing, and heritage sightline architectural compliance.
Engineered Fenestration Systems
Featured Slide & Swing Systems for Commercial & Luxury Residential Projects
Precision-engineered with 6063-T6 virgin aluminium alloys, multi-point compression seals, and thermal break barriers. Rigorously tested to withstand AS 2047 cyclonic pressures and severe coastal humidity.
180,000㎡
Automated Smart Manufacturing Park
25+ Yrs
Architectural Engineering Heritage
600+
Master Craftsmen & Facade Engineers
100+
Global Patents, AS 2047, CE & ISO9001
Manufacturing Excellence
Engineering Anatomy of Guangdong Dejiyoupin (DERCHI) Slide & Swing Systems
Why Foshan fenestration standards define global architectural value. An engineering comparison of metallurgy, thermal dynamics, and structural wind resistance.
Virgin 6063-T6 Extrusion Alloys
Unlike secondary recycled billet extrusions prone to internal voids and surface blistering, our operations utilize 100% primary aluminium ingots alloyed to 6063-T6 specifications. Profiles feature minimum wall thicknesses of 2.0mm to 3.5mm for heavy-duty structural leaves, exceeding national and international load-bearing thresholds.
- Tensile strength exceeding 205 MPa for cyclone resilience
- Fluorocarbon (PVDF) and AkzoNobel marine-grade powder coatings
- Corrosion resistance exceeding 1,000 hours in ASTM B117 salt spray tests
Polyamide PA66 Thermal Barriers
Tropical climates in Southeast Asia and the Middle East demand high condensation resistance and thermal insulation to control HVAC load. Our sliding and swing door profiles integrate Technoform glass-fiber reinforced Polyamide (PA66 GF25) thermal break strips, arresting conductive heat gain while maintaining structural rigidity.
- Overall fenestration U-values as low as 1.4 W/m²·K
- Multi-chambered profile architecture for superior acoustic isolation (STC 40+)
- Continuous EPDM co-extruded perimeter gaskets for airtight closures
Certified Multi-Point Hardware Mechanics
A slide or swing door is only as dependable as its mechanical transmission. DERCHI doors integrate custom-engineered German hardware (Siegenia, Roto, Hoppe) or proprietary high-tensile components. Every pivot hinge, heavy-duty tandem roller, and multi-point lock box undergoes 100,000 continuous operating cycle simulations.
- Heavy-duty sliding roller carriages rated up to 450 kg per panel
- Mushroom-head perimeter locking pins for severe forced-entry protection
- Sub-sill concealed water diversion drainage channels prevents reverse seepage
| System Classification | Profile Metallurgy & Wall | Weathering & Wind Pressure | Acoustic Performance | Primary Project Application |
|---|---|---|---|---|
| Lift & Slide Architectural Door | 6063-T6 / 2.5mm - 3.0mm Wall | AS 2047 N6 / 4500 Pa | Rw 38 - 42 dB (Dual IGUs) | Coastal Luxury Villas, Penthouse Balconies |
| Heavy-Duty Pivot Swing Door | Cast Aluminium / Steel Composite | Water Resistance > 700 Pa | Rw 40 dB (Composite Core) | Grand Residential Entrances, Hotel Lobbies |
| Commercial French Casement | Thermal Break Aluminium / 2.0mm | Air Tightness Class 4 (EN 12207) | Rw 36 - 40 dB | Courtyard Access, High-Traffic Commercial |
| Slim-Stile Sliding Screen Door | High-Tensile Alloy / 1.8mm Wall | Wind Deflection L/250 Standard | Rw 32 - 35 dB | Interior Partitions, Balcony Dividers |
Procurement Intelligence
Global Fenestration Trends: 2025–2030 Procurement Forecast
How evolving architectural specifications, ESG green building standards, and motorized building automation are reshaping high-end wholesale door procurement from China.
1. Invisible Frames & Concealed Thresholds
Architectural demand is radically converging on minimal sightlines. The trend in multi-panel sliding doors is transitioning from standard 50mm interlock profiles toward 16mm–22mm micro-interlocks with zero-step, barrier-free recessed sub-floor drain tracks. For B2B importers, specifying systems with integrated perimeter drainage trays is crucial to eliminate the water ingress risks historically associated with zero-threshold designs.
2. Smart Building Automation & Concealed Actuators
Next-generation luxury hospitality and residential developments require seamless building management system (BMS) integration. Modern swing and sliding systems now incorporate brushless concealed motorized drives, electronic multi-point lock actuators, and biometric access controllers directly into the profile head tracks, allowing effortless motorized operation of massive 500kg panels via wall pads or mobile apps.
3. Low-Carbon Metallurgy & Circular Certification
As LEED, BREEAM, and Green Star standards become standard procurement mandates in Europe, Oceania, and the Americas, Tier-1 Chinese exporters are shifting to renewable energy-smelted aluminium. By obtaining Environmental Product Declarations (EPD) and validating recycled aluminium ratios (up to 75%), developers can lower embodied carbon ratings without sacrificing structural yield strength.
Why Partner With Us
Guangdong Dejiyoupin (DERCHI) Exporting Advantages
Direct from Foshan, China's epicentre of architectural fenestration. Over two decades of precision export capabilities tailored for international distributors, developers, and facade contractors.
Free CAD Shop Drawings & BIM Models
Avoid expensive site alterations. Our engineering division provides end-to-end technical support including free AutoCAD elevation drawings, structural wind-load calculation sheets, section details, and BIM Revit files directly matched to your architectural door schedules prior to manufacturing.
Comprehensive Global Testing Certifications
Our products possess proven credentials helping commercial clients pass stringent national building inspections. DERCHI fenestration products are tested and certified to CE (EN 14351-1), ISO 9001 quality management, Australian AS 2047 cyclonic N6 wind and water standards, and UL fire-rated certifications.
Direct Maritime Logistics from South China Ports
Headquartered in Foshan within the Greater Bay Area, our strategic location minutes from Guangzhou, Nansha, and Shenzhen ports enables shorter maritime lead times to Southeast Asia, Oceania, the Middle East, and the Americas. Packed in full fumigated plywood crates with moisture-barrier wrapping.
Procurement Guide & Due Diligence
Frequently Asked Questions for B2B Importers & Contractors
Key insights addressing quality assurance, packaging standards, structural compliance, and custom architectural fabrication.
How does DERCHI ensure structural stability for oversized sliding and pivot doors in typhoon zones?
Every custom oversized door undergoes finite element wind-load calculation based on local building codes and elevation heights. For typhoon-prone markets like the Philippines, Florida, or the Caribbean, we deploy structural internal steel corner cleats, heavy-wall 6063-T6 mullions, and laminated tempered glass units certified to Australian AS 2047 N6 cyclonic testing (covering positive/negative design wind pressures up to 4500 Pa).
What surface finishing technologies are applied to prevent corrosion in marine coastal environments?
We offer architectural fluorocarbon PVDF finishes (70% Kynar 500 resin), AkzoNobel powder coating, and premium architectural anodizing (20–25 microns). These finishes meet AAMA 2605 requirements, providing outstanding UV resistance, color retention, and resistance to coastal salt spray exceeding 1,000 to 3,000 hours of continuous ASTM B117 salt fog testing without chalking or profile pitting.
Can we request custom hardware brands and smart electronic access systems?
Yes. Our production lines seamlessly accommodate international hardware platforms including German Siegenia, GU, Roto, Hoppe, and CMECH, as well as customized biometric smart locks featuring 3D facial recognition, Tuya/Zigbee integration, fingerprint scanners, and mechanical emergency bypasses. All mortise cuts and lock preparations are completed using high-precision 5-axis CNC machining centers.
What are the standard international export packaging and sea freight safety protocols?
To prevent maritime transit damage, door frames and sash panels are wrapped in 5-layer protective PE film and shock-absorbent pearl cotton, protected by corner edge guards, and crated inside fully closed, fumigation-free solid plywood crates. We include moisture desiccants within the crates and steel-strap them to facilitate safe mechanical forklift unloading on job sites.
What is the standard production lead time and Minimum Order Quantity (MOQ)?
Standard project turnaround time is 25 to 35 business days following CAD shop drawing approval and color swatch confirmation. For bespoke residential villa projects, our MOQ is flexible (supporting sample units and mixed-door container shipments); for commercial developments, we can dispatch multiple 40HQ containers monthly backed by our 180,000㎡ industrial capacity.
How do you handle factory audits and on-site third-party quality control inspections?
We welcome third-party pre-shipment inspections from agencies such as SGS, TÜV Rheinland, Intertek, or your designated inspection representatives. Additionally, our 360° VR Factory Tour enables overseas buyers, developers, and architects to inspect our extrusion processing, CNC milling, assembly lines, and corner crimping stations virtually in real time.