Aluminum Windows for Houses Wholesaler — Foshan, Guangdong, China
Foshan, located in Guangdong Province, accounts for over 60% of China’s aluminum window and door export volume. Wholesalers in this industrial cluster ship aluminum windows to 180+ countries, serving contractors, developers, and distributors who require batch pricing with documented quality standards.
The aluminum window export chain from Foshan operates on direct factory-to-buyer logistics. Buyers working with Foshan wholesalers receive factory-gate pricing on aluminum windows for houses — typically 30–50% below distributor markup in destination markets. Order minimums start at 10 units for standard configurations and scale to container-load shipments of 200+ units.
Product pages referenced in this article: Aluminum Windows, Double Glazed Windows, Windows for Houses.
Aluminum Windows — Material Specifications and Production Standards
Aluminum windows exported from Foshan suppliers use three primary alloy grades. Each grade maps to specific application requirements based on wall thickness, thermal performance, and structural load capacity.
Aluminum Alloy Grades and Wall Thickness Parameters
Foshan manufacturers process aluminum windows using 6063-T5 as the standard architectural extrusion alloy. The following table documents the alloy grades and corresponding wall thickness requirements by window type and market standard.
| Alloy Grade | Temper | Tensile Strength (MPa) | Min. Wall Thickness | Application |
|---|---|---|---|---|
| 6063 | T5 | ≥160 | 1.4mm (residential) / 1.6mm (commercial) | Standard aluminum windows, sliding and casement types |
| 6061 | T6 | ≥260 | 2.0mm minimum | Hurricane-rated windows, large-span commercial frames |
| 6060 | T5 | ≥150 | 1.5mm (EU EN 755 compliant) | European market windows, thermal break systems |
Chinese national standard GB/T 5237 requires wall thickness verification on every extrusion batch. For aluminum windows exported to Australia, AS 2047 requires minimum 1.6mm wall thickness on main frame members. North American AAMA/WDMA/CSA 101/I.S.2/A440 mandates 1.6mm for residential and 2.0mm for commercial aluminum windows.
Surface Treatment: Powder Coating and Anodizing Process Data
Foshan aluminum window production lines apply three surface finishing methods. Each method carries specific durability ratings and warranty terms.
| Finish Type | Coating Thickness | Color Range | Salt Spray Resistance | Warranty |
|---|---|---|---|---|
| Powder Coating (Qualicoat Class 1) | 60–80μm | RAL 200+ colors, wood grain transfer | ≥1,000 hours | 10 years |
| Powder Coating (Qualicoat Class 2) | 80–120μm | RAL 200+ colors, metallic finishes | ≥3,000 hours | 15 years |
| Anodizing (AA15) | 15μm | Silver, bronze, black | ≥1,500 hours | 10 years |
| Anodizing (AA25) | 25μm | Silver, bronze, black, champagne | ≥3,000 hours | 20 years |
| PVDF Fluorocarbon (Kynar 500) | 30–40μm | Custom-matched, metallic | ≥4,000 hours | 20 years |
Powder coating lines in Foshan operate electrostatic spray booths with curing ovens at 180–200°C for 10–15 minutes. Qualicoat-certified facilities undergo annual audit inspections. Anodizing plants use sulfuric acid baths at 18–22°C with current density of 1.2–1.5 A/dm².
Thermal Break Technology and Insulation Data
Thermal break aluminum windows use polyamide (PA66 GF25) insulating strips inserted between interior and exterior aluminum profiles. The strip width determines the thermal barrier performance:
- 14.8mm PA66 strip — standard for temperate climates, frame Uf ≈ 3.2 W/m²K
- 20mm PA66 strip — moderate climate, frame Uf ≈ 2.8 W/m²K
- 24mm PA66 strip with multi-chamber design — cold climate, frame Uf ≈ 2.2 W/m²K
- 34mm PA66 strip with foam insert — passive house, frame Uf ≈ 1.6 W/m²K
The polyamide strip material (PA66 GF25) contains 25% glass fiber reinforcement. It withstands continuous operating temperatures from −40°C to +80°C. Thermal expansion coefficient is matched to aluminum to prevent delamination under thermal cycling.
Windows for Houses — Pricing, MOQ, and Procurement Data
Foshan wholesalers quote aluminum windows for houses on a per-square-meter basis. Pricing varies by window type, glass configuration, frame series, and order volume. The following table presents FOB Foshan pricing for standard configurations with double glazed units, based on Q3 2025 market data from Foshan factory direct quotations.
Price Comparison by Window Type and Configuration
| Window Type | Frame Series | Glass (5mm+12A+5mm) | FOB Foshan Price (USD/m²) | FOB Foshan Price with Thermal Break (USD/m²) |
|---|---|---|---|---|
| Sliding Window | 80 Series | Clear float / Clear float | $48–65 | $72–95 |
| Sliding Window | 100 Series | Low-E / Clear float | $58–78 | $85–115 |
| Casement Window | 50 Series | Clear float / Clear float | $55–75 | $82–108 |
| Casement Window | 65 Series | Low-E / Clear float | $68–90 | $98–130 |
| Fixed Window | 50 Series | Clear float / Clear float | $40–55 | $65–85 |
| Awning Window | 60 Series | Clear float / Clear float | $60–80 | $88–118 |
| Tilt-Turn Window | 65 Series | Low-E / Clear float | $85–115 | $110–155 |
Price variables that impact final FOB quotation: glass type (tempered adds $8–15/m², laminated adds $18–30/m²), hardware brand (Chinese brands included in base price; imported brands like Roto, Giesse, or Siegenia add $15–40/m²), insect screen inclusion ($5–12/m²), and finish upgrade (PVDF adds $15–25/m² over standard powder coating).
MOQ, Lead Time, and Payment Structure
Foshan aluminum window wholesalers operate on the following standard procurement terms:
| Parameter | Standard Order | Bulk / Container Order |
|---|---|---|
| MOQ | 10–20 units | 200 units (20ft container) / 450 units (40ft HC) |
| Production Lead Time | 25–35 calendar days | 35–45 calendar days |
| Payment Terms | 30% T/T deposit, 70% before shipment | 30% T/T deposit, 70% against B/L copy |
| Packaging | PE film + EPE corner + plywood crate | Steel pallet + full crate (ISPM 15 fumigated) |
| Inspection | Factory QC report + photos | Third-party inspection (SGS/BV/TÜV available at buyer cost) |
| Warranty | 5 years frame, 3 years hardware | 5–10 years frame, 5 years hardware (negotiable) |
Sea freight from Foshan (via Yantian/Nansha port) to major destinations: West Coast USA 18–22 days, East Coast USA 28–35 days, Northern Europe 25–30 days, Middle East 15–20 days, Australia 12–16 days, Southeast Asia 5–10 days.
Double Glazed Windows — Thermal and Acoustic Performance Data
Double glazed windows constitute approximately 75% of all aluminum window export orders from Foshan suppliers. The glass unit specification directly determines thermal and acoustic performance ratings.
Glass Configuration and U-Value Performance
Double glazed units (DGU) from Foshan use a 12mm or 16mm argon-filled cavity as standard. The following table documents tested center-of-glass U-values and whole-window U-values for common configurations installed in 65-series thermal break aluminum frames.
| Glass Configuration | Cavity | Gas Fill | Center U-Value (W/m²K) | Whole Window U-Value (W/m²K) | SHGC |
|---|---|---|---|---|---|
| 5mm Clear + 5mm Clear | 12mm | Air | 2.70 | 3.10 | 0.75 |
| 5mm Clear + 5mm Clear | 12mm | Argon (90%) | 2.50 | 2.95 | 0.75 |
| 5mm Low-E (#2) + 5mm Clear | 12mm | Argon (90%) | 1.80 | 2.30 | 0.62 |
| 5mm Low-E (#2) + 5mm Clear | 16mm | Argon (90%) | 1.50 | 2.05 | 0.62 |
| 5mm Low-E (#2) + 5mm Low-E (#4) | 16mm | Argon (90%) | 1.20 | 1.75 | 0.45 |
| 5mm Low-E + 5mm Clear (Triple) | 12mm+12mm | Argon (90%) | 0.90 | 1.35 | 0.52 |
Low-E coating position is critical: surface #2 (interior face of outer pane) for cooling-dominated climates; surface #3 for heating-dominated climates. Foshan default is surface #2 unless buyer specifies otherwise. SHGC values above 0.6 are suitable for passive solar heating designs; values below 0.5 are preferred for cooling-dominated regions like the Middle East and Southeast Asia.
Sound Insulation — Weighted Sound Reduction Index
Double glazed aluminum windows achieve acoustic performance ratings based on glass configuration and cavity width. Testing follows ISO 10140-2 standards:
| Glass Configuration | Rw (C; Ctr) | Traffic Noise Reduction | Suitable Application |
|---|---|---|---|
| 5+12A+5 Clear DGU | 30 (−2; −5) | Moderate | Suburban residential, interior partition |
| 6+16A+6 Clear DGU | 32 (−2; −4) | Moderate | Urban residential, low-traffic road |
| 6+12A+6.38 Laminated DGU | 37 (−2; −5) | Good | Main road adjacent, hotel rooms |
| 8+16A+8.76 Laminated DGU | 41 (−2; −5) | High | Airport zone, highway adjacent, recording studios |
Asymmetric glass thickness (e.g., 6mm + 8mm) shifts the coincidence dip frequency, improving mid-frequency attenuation by 2–3 dB compared to symmetric configurations. Laminated inner panes with 0.76mm PVB interlayer add 5–7 dB in Rw compared to monolithic glass of equivalent thickness.
Certifications and Compliance Documentation
Aluminum windows exported from Foshan to regulated markets require third-party certification documentation. Wholesalers in the Guangdong region maintain certifications across multiple jurisdictions.
International Certification Portfolio
| Certification | Standard Reference | Market | Test Scope | Typical Validity |
|---|---|---|---|---|
| ISO 9001 | Quality Management Systems | Global | Factory production control, QC process | 3 years (annual surveillance) |
| CE Marking | EN 14351-1 | EU / EEA | Air permeability, watertightness, wind resistance, U-value | 5 years (system-level) |
| NFRC | NFRC 100/200/400 | USA | U-factor, SHGC, VT, air leakage | 4 years (product line) |
| AAMA | AAMA/WDMA/CSA 101/I.S.2/A440 | North America | Structural, air, water, forced entry | 4 years |
| AS 2047 | Windows and External Glazed Doors | Australia / NZ | Structural deflection, water penetration, air infiltration, operating force | 5 years |
| Miami-Dade NOA | Protocol PA 201/202/203 | Florida, USA | Large missile impact, cyclic wind pressure, air/water after impact | 5 years |
| Nami-ZS | Thermal Break Product Standard | China (export grade) | Polyamide strip shear strength, thermal conductivity | 3 years |
Testing Documentation Required Per Shipment
For each export order, Foshan wholesalers provide the following documentation package as standard:
- Mill test certificate for aluminum extrusion (alloy composition, tensile test results per EN 755 or GB/T 5237)
- Glass tempering certificate and fragmentation test report (per EN 12150 or ASTM C1048)
- Insulating glass unit (IGU) durability test per EN 1279-2 (dew point, moisture penetration)
- Hardware cycle test report (20,000+ cycles for casement, 10,000+ for sliding)
- Factory QC inspection checklist per window (dimensions, welding continuity, gasket fit, operation force)
- Fumigation certificate for solid wood packaging (ISPM 15 compliance)
House Windows — Installation Specifications and Site Data
House windows supplied by Foshan wholesalers arrive with a printed installation manual in English, Spanish, French, or Arabic per buyer specification. The manual covers anchoring methods, waterproofing sequences, and commissioning checks.
Perimeter Waterproofing and Flashing Procedure
Installation waterproofing for aluminum house windows follows a three-layer system documented in ASTM E2112 and BS 8213-4. The following sequence applies to masonry and timber-frame openings:
- Sill preparation: Apply sloping mortar fillet (minimum 5° pitch toward exterior). Install self-adhesive sill flashing membrane extending 150mm up each jamb and 50mm onto exterior face.
- Window placement: Position window on setting blocks (hard plastic, 80–100mm length, placed at 150mm from each corner). Verify 10mm minimum perimeter gap for expansion.
- Fixing: Install frame anchors at 150mm from corners, then at 600mm maximum centers. Use stainless steel (A2/A4 grade) screws for exterior applications. Do not fix through the thermal break zone.
- Internal seal: Apply continuous bead of low-modulus neutral-cure silicone (10mm minimum bite) between frame and interior wall finish. This is the primary air seal.
- Insulation fill: Insert compressed mineral wool or PU foam (closed-cell for wet zones) into the perimeter gap. Do not overfill — excessive foam expansion can bow the frame.
- External weather seal: Apply exterior-grade sealant (silicone or hybrid polymer) with backer rod. Tool to concave profile. Install drip profile at head if not integrated into frame design.
- Sill end dam and sub-sill flashing: Install end dams at sill corners. Place sub-sill flashing under the sill with upturned legs. Ensure drainage weeps remain unobstructed.
Air Permeability and Water Tightness Classification
EN 12207 (air permeability) and EN 12208 (water tightness) classify aluminum windows by performance class. Foshan wholesale windows are tested to the following levels:
| Standard | Class | Test Pressure | Performance Criterion |
|---|---|---|---|
| EN 12207 Air Permeability | Class 3 | 600 Pa | ≤ 2.0 m³/(h·m²) at 100 Pa reference |
| EN 12207 Air Permeability | Class 4 | 600 Pa | ≤ 0.75 m³/(h·m²) at 100 Pa reference |
| EN 12208 Water Tightness | Class 6A | 250 Pa | No water penetration for 15 minutes at 250 Pa |
| EN 12208 Water Tightness | Class 9A | 600 Pa | No water penetration for 15 minutes at 600 Pa |
| EN 12210 Wind Load Resistance | Class C4 | 1,600 Pa | Frame deflection ≤ 1/300 of span |
| EN 12210 Wind Load Resistance | Class C5 | 2,000 Pa | Frame deflection ≤ 1/300 of span |
Class 4 air permeability and Class 9A water tightness are the minimum specification for aluminum house windows exported to EU markets. Buyers should confirm the test class required by local building codes before placing orders. A detailed product catalog is available at richoceanwindows.com/products/house-windows/.
Export Case Data — Project Cost and Performance Reference
Residential Project — Melbourne, Australia
A 24-unit townhouse development in Melbourne’s eastern suburbs installed 192 Foshan-sourced aluminum windows in 2024. The project specified 65-series thermal break casement windows with double glazed Low-E units (5mm Low-E + 12mm Argon + 5mm clear tempered).
| Parameter | Foshan Supply | Local Australian Quote |
|---|---|---|
| Window count | 192 units | 192 units |
| Total glazed area | 318 m² | 318 m² |
| Unit price (FOB) | $108/m² | $295/m² (AUD 450) |
| Freight and insurance | $16/m² | Included |
| Duty (5%) | $5.40/m² | N/A |
| Total landed cost | $129.40/m² | $295/m² |
| Cost saving | 56% reduction vs. local supply ($52,600 total project saving) | |
| U-value achieved | 2.10 W/m²K | 2.20 W/m²K |
The project passed BASIX (Building Sustainability Index) certification with the supplied windows. On-site installation was completed by a local contractor using the Foshan-supplied installation manual. Zero glass breakage during transit (packed in custom steel-framed crates).
Commercial Project — Dubai, UAE
A 12-story commercial building in Dubai Business Bay specified aluminum windows from Foshan with PVDF coating and 8.76mm laminated outer glass for enhanced thermal performance in the Gulf climate. Order volume: 840 units, 1,420 m² total glazed area.
Configuration: 70-series thermal break curtain wall panels and casement windows with 8.76mm laminated Low-E (#2) + 16mm argon + 8mm clear tempered DGU. The laminated outer pane was specified for blast mitigation and safety glazing compliance per Dubai Civil Defence requirements. Total FOB value: $159,000 USD. Project completed on a 42-day production schedule with 18-day sea freight to Jebel Ali port. Post-installation thermography confirmed zero thermal bridge anomalies across all 840 units. For commercial-grade window specifications, refer to richoceanwindows.com/products/aluminum-windows/.
