Aluminum Window Supplier in China | Frame & Sliding Specs
Aluminum Window Supplier in China | Frame & Sliding Specs
Aluminum window procurement from China requires verified material specifications, tested performance data, and documented certification scope. This reference document compiles factory-published aluminum window data covering alloy grade, thermal break dimensions, glazing configurations, pricing structure, certification scope, and installation parameters. All data points reflect ROGENILAN’s production line output for export orders between 2024 and 2026.
Aluminum Window Manufacturing Specifications in China
6063-T5 Aluminum Alloy Composition and Temper
ROGENILAN aluminum windows use 6063-T5 alloy as the standard profile material. The 6063 alloy composition meets ASTM B221 and GB/T 5236 requirements, with magnesium content between 0.45% and 0.90%, silicon content between 0.20% and 0.60%, and iron content held below 0.35%. The T5 temper indicates air cooling from extrusion temperature followed by artificial aging, producing tensile strength ≥ 160 MPa, yield strength ≥ 110 MPa, and elongation ≥ 8%.
For coastal and high-corrosion environments, 6063-T6 temper is offered as an upgrade, raising tensile strength to ≥ 205 MPa. Hardness values measured on the Weber scale reach 8-11 HW for T5 and 11-15 HW for T6. Each profile batch ships with a mill test certificate (MTC) listing actual composition values, temper condition, and mechanical test results.
Profile Wall Thickness and Cross-Section Standards
Aluminum window profile wall thickness follows a tiered specification based on window size and wind load class. The table below lists standard wall thickness ranges for residential and light commercial projects:
Profile straightness tolerance is ≤ 1.0 mm per meter length, with twist tolerance ≤ 1.5° per meter. Surface quality follows GB/T 5237 Class II for anodized profiles and AAMA 2604 for powder-coated finishes. For more detail on extrusion and surface finish options, see ROGENILAN aluminum window product range.
Aluminum Sliding Window Configurations and Hardware
Two-Track vs Three-Track Sliding Systems
Aluminum sliding window systems are configured as two-track or three-track assemblies. The two-track design allows one operable sash and one fixed sash per unit, achieving a maximum openable area of 50% of the total window area. The three-track design supports two operable sashes and one fixed sash, raising the openable area to 66%.
Track dimensions are standardized: two-track systems use a 75 mm frame depth with 60 mm track spacing; three-track systems use a 110 mm frame depth with 70 mm track spacing. Sash overlap on the closed position measures 18 mm minimum, with brush seals (wool pile) of 6 mm × 6 mm or 9 mm × 9 mm specification providing draft and water barrier function.
Roller, Track, and Locking Hardware Specs
Sliding window rollers are manufactured from POM (polyoxymethylene) or 304 stainless steel bearings, supporting 40-80 kg per sash. Roller housing is die-cast zinc with chrome plating. Locking hardware includes multi-point cam locks (2-5 locking points depending on sash height), with cylinders tested to 50,000 open/close cycles. Hopper-style secondary locks are available for high-wind applications.
Standard hardware brand options include Kin Long (domestic), Roto (Germany), and Maco (Germany), with German hardware adding approximately USD 18-32 per window to the base price. Hardware finish options: brushed stainless steel, matte black, and white powder coat to match frame color. Review the aluminum sliding window configurations for full hardware combinations.
Aluminum Window Frame Thermal and Structural Performance
Polyamide Thermal Break Widths and U-Values
Thermal break aluminum window frames use polyamide 66 (PA66) reinforced with 25% glass fiber (PA66-GF25) struts. Standard thermal break widths and corresponding frame U-values are listed below:
Whole-window U-value combines frame U-value with glass U-value. With double glazing (5mm+12A+5mm argon), whole-window U-value reaches 1.8-2.2 W/m²K; with triple glazing (5mm+12A+5mm+12A+5mm argon), whole-window U-value reaches 0.9-1.2 W/m²K. Condensation resistance factor (CRF) values fall between 55 and 72 depending on configuration.
Wind Load, Water Tightness, and Air Permeability Classes
Aluminum window structural performance is tested under GB/T 7106 and EN 12210/12211 standards. Performance classes for ROGENILAN standard sliding windows:
- Wind load resistance: Class 4 (≥4000 Pa design pressure), with tested values reaching 5200 Pa for large sash configurations
- Water tightness: Class 4 (≥500 Pa under positive pressure), tested at 700 Pa without water penetration
- Air permeability: Class 8 (≤0.5 m³/h·m² at 100 Pa pressure difference)
- Structural deflection: ≤ L/180 for frame, ≤ L/150 for sash at design wind load
For hurricane-impact zones (Florida, Caribbean, Gulf Coast), impact-rated configurations use laminated glass of 6mm tempered + 1.52mm PVB + 6mm tempered, certified under Miami-Dade NOA protocols. Large-missile impact tests use a 2.4 kg 2×4 lumber fired at 15.2 m/s, with no penetration and cyclic pressure test survival at ±8000 Pa.
Double Glazed Aluminium Windows Pricing Structure
Glass Configuration Options (Single to Triple Glazing)
Double glazed aluminium windows ship with multiple glass configurations. Each configuration has distinct thermal, acoustic, and safety performance values that directly affect the final price:
“A” denotes air gap or argon-filled cavity. Argon fill improves Ug value by 0.2-0.3 W/m²K compared to air. Low-E coating options include single-silver (standard), double-silver, and triple-silver variants, with triple-silver adding USD 8-12/m² to the glass cost.
Factory Pricing by Size and Configuration
Base factory pricing for aluminum sliding windows (frame + glass + hardware + assembly) at standard residential sizes:
Pricing reflects FOB Huangpu Port, Guangzhou. Quantity discounts apply: 5% off at 200 m², 8% off at 500 m², 12% off at 1000 m² or above. Custom RAL colors add USD 4-6/m²; wood-grain sublimation finish adds USD 12-18/m². Powder coating thickness standard is 60 μm (AAMA 2604) or 80 μm (AAMA 2605) for coastal applications.
Certifications, MOQ, and Procurement Process
Required Export Certifications (CE, NFRC, AAMA, Miami-Dade NOA)
ROGENILAN aluminum windows carry a certification matrix aligned to target export markets. Certification scope and validity:
- CE Marking (EN 14351-1): Mandatory for European Economic Area. Covers wind load, water tightness, and CE conformity for residential windows. Annual audit by TUV or SGS.
- NFRC (National Fenestration Rating Council): U-factor, SHGC, and VT ratings for North American market. Valid for 4 years, simulation by NFRC-accredited lab.
- AAMA Certification (AAMA 101): American Architectural Manufacturers Association window performance certification for US projects.
- Miami-Dade NOA (Notice of Acceptance): Hurricane-impact certification for Florida and Gulf Coast. Required for openings in Wind-Borne Debris Regions.
- ISO 9001:2015: Quality management system certification, audited annually by Bureau Veritas.
- ASTM E330 / E331 / E283: Structural, water penetration, and air infiltration test reports for US-spec projects.
For European projects, CE declaration of conformity (DoP) and EN 14351-1 test reports are provided free of charge with order. For North American projects, NFRC simulation and AAMA certification documentation fee: USD 350-850 per project depending on window count.
Order Quantities, Payment Terms, and Lead Times
Standard procurement parameters for export orders:
Shipping options include FOB Huangpu, CIF, and DDP terms. Container loading: a 20-foot container holds approximately 180-240 m² of aluminum windows; a 40-foot HQ container holds 450-580 m², depending on packaging configuration and sash pre-assembly level.
Installation and Quality Control Protocols
Frame Installation and Waterproofing Detail
Aluminum window installation follows a sequence of steps to ensure structural anchorage and water management:
- Prepare rough opening with 10-15 mm tolerance on each side. Verify opening dimensions against shop drawings before frame placement.
- Apply waterproofing membrane (SBS or butyl-based) at sill and jambs. Membrane must extend 150 mm onto adjacent wall surface.
- Set frame in opening using plastic shims at 400 mm spacing. Verify plumb, level, and square within 1.5 mm tolerance.
- Secure frame with corrosion-resistant screws (304 stainless, 4.2 mm × 50 mm) at 300 mm on-center through pre-drilled anchor holes.
- Apply low-expansion polyurethane foam insulation in the gap between frame and wall. Avoid overfilling to prevent frame distortion.
- Install exterior sill pan with end dams. Apply silicone sealant (Dow 791 or equivalent) at all exterior joints, with sealant bead minimum 6 mm × 6 mm.
- Verify operation: sash slides freely with operating force ≤ 50 N (per GB/T 22786).
Water test protocol per ASTM E1105: spray at 3.4 L/m²·min for 15 minutes with interior pressure differential of 137 Pa. No water penetration to interior is acceptable. Document results in installation QA log.
Slider Adjustment and Performance Testing
Post-installation slider adjustment ensures proper operation and sealing. Roller adjustment screws allow ±3 mm vertical travel per sash. Locking keeper alignment is checked using a straightedge across all locking points; misalignment exceeding 1.0 mm requires repositioning. Final air leakage test uses a blower door at 50 Pa pressure differential, with target air change rate ≤ 0.6 ACH for whole-building compliance (Passive House standard).
Periodic maintenance intervals: clean tracks monthly with vacuum and damp cloth, lubricate rollers with PTFE spray every 6 months, replace wool pile seals every 7-10 years or when visible wear exceeds 30%. Document maintenance in the project O&M manual delivered with each order. For sourcing replacement hardware and seal kits, contact the ROGENILAN aluminum window supplier support team.
Project Reference Data
Residential Villa Project — Sanya, Hainan
Completed Q2 2025: 380 m² aluminum sliding windows with 6063-T6 profiles, 1.8 mm wall thickness, 24 mm polyamide thermal break, 6mm+12A+6mm Low-E argon glazing. Configuration: 3-track sliding system, 2.4m × 2.1m units. Project pricing: USD 178/m² (FOB), total contract value USD 67,640. Performance verified: whole-window U-value 1.9 W/m²K, water tightness 500 Pa, structural deflection L/210 at 4000 Pa design pressure.
Apartment Complex — Manila, Philippines
Completed Q4 2024: 2,150 m² aluminum sliding windows with 6063-T5 profiles, 1.4 mm wall thickness, 14 mm polyamide thermal break, 5mm+9A+5mm clear double glazing. Configuration: 2-track sliding, 1.5m × 1.4m units. Project pricing: USD 72/m² (FOB), total contract value USD 154,800. Performance verified: whole-window U-value 3.1 W/m²K, water tightness 400 Pa, air permeability Class 7.
Both projects shipped with full CE documentation, mill test certificates, and installation drawings. Lead time from deposit to FOB: 28 days (Sanya) and 32 days (Manila). Project buyers receive a complete data pack including structural calculations, glass performance simulations, and third-party test reports.
