Rigidly certified against air infiltration, static water penetration, and ultimate wind pressure. Select from tested structural configurations engineered with 6063-T5/T6 marine-grade extruded aluminium.
When specifying custom aluminium sliding windows for high-density residential towers, coastal resorts, or institutional complexes, engineering compliance dictates structural longevity and acoustic isolation.
| Performance Parameter | Commercial Grade (Standard) | Architectural High-Rise Spec | Typhoon / Impact Coastal Grade | Compliance Standards |
|---|---|---|---|---|
| Aluminium Alloy & Temper | 6063-T5 (Wall 1.4 - 1.6mm) | 6063-T6 (Wall 2.0 - 2.5mm) | 6061-T6 / Reinforced High-Yield | GB/T 5237, ASTM B221 |
| Thermal Transmittance (U-Value) | 2.4 – 2.8 W/m²K | 1.5 – 1.8 W/m²K (PA66 GF25) | 1.1 – 1.4 W/m²K (AEROGEL Filled) | NFRC 100/200, ISO 10077 |
| Water Tightness Under Pressure | 300 Pa – 450 Pa | 600 Pa – 750 Pa (Cascade Sills) | 900 Pa – 1200 Pa (Sub-Sill Drain) | AS2047, ASTM E331 |
| Structural Wind Load (Serviceability) | 1500 Pa – 2000 Pa | 3000 Pa – 4500 Pa | Up to 6000 Pa (Design Pressure) | ASTM E1300, AS/NZS 1170 |
| Acoustic Attenuation (Rw / STC) | STC 28 – 32 dB | STC 35 – 39 dB (IGU Low-E) | STC 42 – 48 dB (Acoustic PVB/SGP) | ISO 717-1, ASTM E90 |
| Hardware & Roller Cycle Rating | 25,000 Sliding Cycles | 100,000 Heavy Duty Cycles | 150,000+ Cycles (Stainless 316) | AAMA 906, EN 13126 |
Standard aluminium frames act as thermal conduits, transferring solar heat loads directly to indoor spaces. DERCHI integrates reinforced polyamide (PA66 GF25) thermal insulation bars with up to 35.3mm barrier width.
Designed specifically for super-typhoon corridors and missile impact zones. Our structural interlocks withstand high positive/negative cyclic wind forces without sash dislodgement or seal rupture.
Sliding windows typically fail at the sill junction during heavy monsoon downpours. Our proprietary isobaric drainage cavity prevents wind-driven backpressure from forcing water into interior spaces.
Procurement leaders, façade architects, and real estate developers face tighter energy mandates, stringent carbon footprint quotas, and demand for intelligent hardware integration.
Global ESG reporting requires suppliers to provide Environmental Product Declarations (EPD). Modern OEM lines leverage certified hydro-powered low-carbon aluminium extrusion billets (≤4.0 kg CO2/kg Al), drastically curbing Scope 3 embodied emissions in green star projects.
Moving beyond conventional double glazing, hybrid VIG assemblies achieve center-of-glass U-values as low as 0.45 W/m²K within an 8.3mm profile thickness. This eliminates bulky framing and allows ultra-slim profile aesthetic expressions in high-end developments.
Architectural demand favors flush-integrated jambs and heads where the aluminium frame embeds entirely within the wall structure. Only 18mm interlock meeting stiles remain visible, maximizing natural daylight penetration and panoramic viewing angles.
Concealed 24V brushless DC actuators embedded inside top rails interface natively with KNX, Zigbee, and centralized BACnet systems. Motorized sliding panels execute automated night-purge cooling and sensor-driven wind-and-rain protection sequences automatically.
DERCHI eliminates cross-border specification errors via structured engineering gate reviews, shop drawing BIM approvals, and factory trial assembly checks prior to crating.
Our structural team audits CAD elevations, structural deflection ratios, and local wind load criteria.
Custom die development for custom profile sections, structural fin reinforcements, and matching accessories.
Fully dimensioned 1:1 scale joint drawings, glass specifications, and hardware schedules for architect review.
Selection of PPG certified fluorocarbon (PVDF) coatings, Qualicoat powder coats, and premium German hardware.
Five-axis CNC machines execute precision cutting, corner-crimping, drainage slot routing, and drillings.
100% dry-fit mockups confirm squareness, sliding friction, lock engagement, and sealing tolerance.
High-grade shrink wrapping, anti-scratch corner guards, and fumigated steel-reinforced plywood timber crates.
Detailed bilingual technical manuals, video tutorials, or on-site engineering crews deployed globally.
Headquartered in Shishan Town, Nanhai District, Foshan—the epicenter of global architectural aluminum—Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) represents 25+ years of verified excellence.
By controlling precision extrusion casting, surface powder finishing, glass tempering, and unitized assembly within our 180,000 m² facility, DERCHI controls lead-times, raw material costs, and strict micron-level tolerances.
Located minutes from major Pearl River Delta ocean ports (Nansha, Shekou, Yantian), guaranteeing rapid, uninterrupted maritime container transport across Southeast Asia, North America, the Middle East, and Europe.
We eliminate customs entry friction and municipal code inspection delays. Our systems possess formal compliance certificates validated by recognized global third-party test bodies:
Over 18,000 landmark developments delivered worldwide—including Hilton Hotel chains, Beverly Hills luxury private estates, Emerald City high-density towers, and Atour hospitality suites.
Partnering with over 300 international distributors and developers, generating over $435M in project revenues, backed by comprehensive project warranty liability insurance.
Essential technical, logistical, and warranty details compiled by our engineering team to assist contractors and commercial buyers in vetting supplier reliability.
We exclusively utilize 6063-T5 or 6063-T6 architectural grade virgin aluminium extrusions with wall thicknesses ranging from 1.6mm to 3.0mm, adhering strictly to GB 5237 and ASTM B221 standards. T6 temper is deployed whenever structural wind load analyses specify higher tensile and yield strength requirements on tall buildings.
Yes. Our internal tooling center can design, extrude, and test custom aluminium dies within 15–20 days. Clients simply provide original architectural CAD sections or sample profiles. Our engineering team refines tolerances, verifies isobaric drainage, and submits 3D printed samples prior to full-scale die cutting.
We implement high-rise stepped sills equipped with concealed internal drainage chambers, continuous EPDM compression gaskets, and self-closing weep hole baffles. This prevents high exterior dynamic wind pressure from forcing rainwater back up the sill, tested and verified to remain watertight beyond 750 Pa.
For maritime zones exposed to salt air spray, we apply AAMA 2605 compliant Fluorocarbon (PVDF) 3-coat finishes (min 30 microns) or architectural Class I anodized coatings (min 25 microns). Both systems resist chalking, gloss loss, and filiform corrosion, withstanding 3,000+ hours of continuous salt-spray testing.
Standard OEM sampling with existing extrusion dies takes 10–14 days. New die development requires an additional 15 days. Container-volume mass production (10,000+ m²) is normally completed within 30 to 40 days following final approved shop drawings and deposit confirmation.
Oversized panels receive heavy-duty structural aluminium mullion reinforcement inserts and run on precision-machined heavy gauge 304/316 stainless steel tracks. Our dual tandem bogie rollers feature sealed carbon or ceramic bearings rated for panel weights up to 400 kg each, guaranteeing smooth, noiseless glide below 15N push force.
Connect directly with DERCHI façade engineers. Submit your project schedule, architectural CAD details, or project tender requirements for comprehensive technical feedback and detailed manufacturer costing within 24 hours.