China Foshan Sliding Windows with Retractable Screens Manufacturer Price List

China Foshan Aluminum Sliding Window Manufacturing Standards

In Foshan, China, the production of aluminum sliding windows with retractable screens follows specific engineering protocols. These window systems combine aluminum frame profiles, glass units, hardware components, and mesh screening mechanisms. The manufacturing sector in Guangdong Province provides 80% of the aluminum profiles used in these systems globally. This document details the specifications, material properties, and pricing for B2B procurement of these windows in 2026.

The system architecture consists of a perimeter frame, sliding sashes, a track system, and a cassette for the retractable screen. The frame depth ranges from 80mm to 190mm depending on the number of tracks and thermal requirements. The retractable screen mechanism operates via a spring-tensioned roller situated inside a housing at the jamb or head of the window frame. Each component is manufactured to tolerances within 0.5mm to ensure functional alignment.

Aluminum Profile Specifications: 6063-T5 and Wall Thickness

The primary material for the window frames is 6063-T5 aluminum alloy. This alloy contains magnesium and silicon as the alloying elements. The T5 temper indicates that the aluminum underwent air cooling after extrusion and artificial aging. The chemical composition of 6063-T5 includes:

• Silicon (Si): 0.2% - 0.6% by weight
• Magnesium (Mg): 0.45% - 0.9% by weight
• Iron (Fe): 0.35% maximum
• Copper (Cu): 0.1% maximum
• Manganese (Mn): 0.1% maximum
• Chromium (Cr): 0.1% maximum
• Zinc (Zn): 0.1% maximum
• Titanium (Ti): 0.1% maximum
• Aluminum (Al): Balance

Wall thickness of the profiles varies by application and building height requirements. Standard thickness options include:

• 1.4mm: Residential applications for windows up to 1.5 meters in height.
• 1.6mm: Standard residential and light commercial use.
• 1.8mm: High-rise residential projects requiring wind pressure resistance.
• 2.0mm: Commercial building standards and structural sliding doors.
• 2.5mm: Industrial and hurricane-zone specifications.
• 3.0mm: Reinforced mullions and extra-large spans for architectural openings.

The tensile strength of 6063-T5 is at least 145 MPa. The yield strength is at least 110 MPa. The elongation at break is 8% minimum. Hardness is measured between 10 and 12 on the Webster scale. The modulus of elasticity for this alloy is 70 GPa.

Thermal Insulation: PA66GF25 Polyamide Strips

To reduce heat transfer, sliding windows utilize thermal break technology. The thermal barrier is a PA66GF25 strip. This material is Polyamide 66 reinforced with 25% glass fiber. The glass fiber reinforcement ensures that the thermal expansion coefficient of the strip matches that of the aluminum profile (23.1 x 10^-6 /K). This prevents separation of the strip and the aluminum during temperature cycles from -30°C to 80°C.

The width of the PA66GF25 strip influences the U-value of the window frame:

• 14.8mm strip: Frame U-value of approximately 3.0 W/(m²·K).
• 20mm strip: Frame U-value of approximately 2.5 W/(m²·K).
• 24mm strip: Frame U-value of approximately 2.0 W/(m²·K).
• 35mm strip: Frame U-value of approximately 1.6 W/(m²·K).

The density of PA66GF25 is 1.30 g/cm³. The melting point is 250°C. The tensile strength of the strip is 80 MPa minimum at room temperature. The water absorption rate is less than 3% by weight.

Glazing Specifications and Glass Units

Sliding windows accommodate various glass configurations. The glass units are measured in thickness for each pane and the spacer width. Typical configurations include:

• Double Glazing: 5mm Clear + 12A + 5mm Clear (Total 22mm)
• Low-E Double Glazing: 6mm Low-E + 12Ar + 6mm Clear (Total 24mm)
• Laminated Safety Glass: 5mm + 0.76PVB + 5mm (Total 10.76mm)
• Triple Glazing: 5mm + 9A + 5mm + 9A + 5mm (Total 33mm)

The spacer bars are made of aluminum or stainless steel. Argon gas (Ar) filling increases the thermal performance by 15% compared to air. The sealants used are primary polyisobutylene (PIB) and secondary silicone or polysulfide. The dew point of the insulated glass units is below -40°C.

Hardware Systems: SIEGENIA, ROTO, and HOPO Components

The hardware system of a sliding window includes rollers, tracks, locking mechanisms, and handles. In Foshan factories, components from SIEGENIA, ROTO, and HOPO are the primary options for B2B orders.

1. SIEGENIA (Germany)

SIEGENIA hardware for sliding systems focuses on the PORTAL series. The rollers are manufactured from steel with a plastic coating to reduce noise. The load capacity per pair of rollers ranges from 80kg to 400kg. The multi-point locking system provides points of contact at the top, bottom, and center of the meeting rail. The handle gear ratio ensures 180-degree operation for locking and unlocking.

2. ROTO (Germany)

ROTO components for sliding windows include the Roto Frank series. The rollers feature ball bearings for movement. The locks utilize a hook-bolt design that engages with a striker plate on the frame. The surface treatment for ROTO hardware is Roto Sil Pro, which provides corrosion resistance tested for 480 hours in salt spray chambers. The system supports sash weights up to 200kg for standard sliding and 400kg for lift-and-slide.

3. HOPO (Global/China)

HOPO provides hardware designed for the Asian and North American markets. HOPO handles are made of zinc alloy or stainless steel 304. The rollers use stainless steel casings and POM (Polyoxymethylene) wheels. The HOPO system includes a damping mechanism that slows the sash before it reaches the frame to prevent impact. The hardware is tested to 50,000 opening cycles.

Retractable Screen Technology and Mesh Materials

The retractable screen system consists of a mesh, a roller tube, a spring mechanism, and side guides. The mesh is retracted into a cassette when the window is closed. The dimensions of the cassette housing are typically 40mm x 40mm or 45mm x 45mm. The mesh materials include:

• Fiberglass Mesh: PVC-coated glass fiber. Mesh count is 18x16 per square inch. Weight is 115g/m². Diameter of the fiber is 0.28mm.
• Polyester Mesh: Coated with UV-resistant material. Mesh count is 20x20.
• Stainless Steel 304 Mesh: 0.2mm wire diameter. Used for security applications.

The spring mechanism is tested for 10,000 to 20,000 cycles. The side guides contain brush seals to prevent insect entry at the edges. The tension is adjustable via a screw at the end of the roller tube. The retraction speed is regulated by a viscous damper to prevent rapid impact.

Manufacturing Process and Inspection and Testing in Foshan

The production of sliding windows follows a 10-step process:

1. Profile Extrusion: Aluminum billets are heated to 450°C and forced through a die.
2. Aging: Profiles are placed in an aging oven for 6 hours at 180°C to achieve T5 hardness.
3. Surface Treatment: Profiles undergo powder coating (60-80 microns) or anodizing (15-25 microns).
4. Cutting: Profiles are cut to size using double-head miter saws with a tolerance of +/- 0.5mm.
5. Milling: Holes for drainage, hardware, and handles are milled using CNC machines.
6. Assembly of Thermal Break: Aluminum profiles and PA66GF25 strips are joined using a rolling machine.
7. Frame Assembly: Corners are joined using aluminum corner cleats and injected with two-part epoxy glue.
8. Glazing: Glass units are installed with EPDM gaskets or silicone sealant.
9. Hardware Installation: Rollers, locks, and retractable screen cassettes are fitted.
10. Testing: Every window undergoes an operation test before packing.

2026 FOB Price List (USD) for Foshan Manufacturers

The following prices are estimates for B2B container-load orders (FOB Guangzhou/Shenzhen). Prices vary based on quantities and specific configurations.

International Certification Standards: AS2047, CE, and NFRC

Windows exported from Foshan meet the following international standards:

1. AS2047 (Australia)

The Australian standard for windows and external glazed doors in buildings. Testing includes:

• Deflection Test: Measures structural movement under wind load.
• Operating Force Test: Measures the force required to open and close the window (maximum 90N).
• Air Infiltration Test: Measures air leakage at 75 Pa pressure.
• Water Penetration Test: Measures resistance to water leakage under pressure (range 150 Pa to 600 Pa).
• Ultimate Strength Test: Measures resistance to failure under peak wind pressure.

2. CE (Europe)

Compliance with EN 14351-1. This certification covers:

• Watertightness: Class 1A to 9A.
• Dangerous Substances: Emission levels of materials.
• Wind Resistance: Class 1 to 5.
• Load-bearing capacity of safety devices.
• Acoustic performance: Rw (C; Ctr) in dB.
• Thermal transmittance: U-value in W/(m²·K).

3. NFRC (North America)

The National Fenestration Rating Council provides ratings for:

• U-Factor: Rate of heat loss. Range 0.20 to 1.20.
• Solar Heat Gain Coefficient (SHGC): Rate of solar radiation admitted. Range 0 to 1.
• Visible Transmittance (VT): Amount of light transmitted. Range 0 to 1.
• Air Leakage. Range 0.1 to 0.3 cfm/ft².

Engineering Performance Data Parameters

The following parameters are obtained from laboratory tests on a 1500mm x 1500mm window unit:

• Wind Pressure Resistance: Grade 8 (P3 ≥ 5.0 kPa).
• Air Permeability: Grade 4 (q1 ≤ 0.5 m³/(m·h)).
• Water Tightness: Grade 9 (ΔP ≥ 700 Pa).
• Sound Insulation: 35 dB - 45 dB (depending on glass).
• Thermal Insulation: 1.5 - 2.8 W/(m²·K).
• Mechanical Strength: Corner joints withstand 1000N of force.

Installation Protocols for Sliding Windows

The installation of sliding windows with retractable screens involves specific steps to ensure alignment and drainage:

1. Opening Preparation: The masonry opening must be checked for level, plumb, and squareness. The tolerance is +/- 3mm per meter.
2. Sub-frame Installation: A galvanized steel sub-frame is fixed to the masonry using expansion bolts at 400mm intervals.
3. Window Frame Placement: The aluminum frame is placed into the opening or sub-frame. Plastic shims are used to adjust the position.
4. Fixing: The frame is fixed using stainless steel screws. The distance between screws is 450mm to 600mm. The distance from the corner to the first screw is 150mm.
5. Sealing: Backer rods are inserted into the gap. Polyurethane foam is used for insulation. Silicone sealant is applied to the interior and exterior perimeters.
6. Drainage Check: The drainage holes must be clear of debris. The weep holes are located on the bottom track and covered with caps.
7. Screen Adjustment: The retractable screen tension is set so the mesh retracts at a speed of 0.5 meters per second.

Maintenance Schedule and B2B Logistics

Maintenance Schedule:

• Every 6 Months: Clean tracks with a vacuum and damp cloth. Remove dust and sand from the roller paths.
• Every 12 Months: Inspect EPDM gaskets for shrinkage or damage. Replace if necessary. Apply lubricant to the rollers and locking points.
• Every 24 Months: Check the tension of the retractable screen spring. Re-tension if the retraction speed slows below 0.3 meters per second.

Logistics Data:

• Packing: Each window unit is protected with PE film, corner protectors, and foam blocks. Crating is done using fumigated plywood.
• Container Loading: A 20GP container holds approximately 150-200 square meters of windows. A 40HC container holds 400-500 square meters.
• Transit Time: From Foshan to major ports (Sydney: 18 days; Los Angeles: 22 days; Hamburg: 35 days; Dubai: 15 days).
• Weight: Average weight of a 1500mm x 1500mm double-glazed unit is 65kg.

Engineering Comparison of Sliding Track Designs

The track design is the primary factor in the operation of a sliding window. Foshan manufacturers utilize three main track types:

The stainless steel rail is an inlay into the aluminum profile. This prevents the aluminum from wearing down due to the friction of the rollers. The hardness of the 304 stainless steel is 200 HB on the Brinell scale. This configuration is used for structural sashes exceeding 100kg.

Profile Surface Treatment Chemistry and Standards

The surface treatment protects the aluminum from oxidation. The two most common treatments are Powder Coating and Anodizing.

1. Powder Coating

The powder consists of polyester resins, pigments, and curing agents. The application process uses electrostatic spray followed by oven curing at 200°C for 20 minutes. The thickness is between 60 and 80 microns. Standards followed include AAMA 2603, 2604, and 2605. AAMA 2605 specifies a 10-year Florida exposure test with color change (Delta E) of less than 5 units. The adhesion test follows ASTM D3359 with a 5B rating.

2. Anodizing

Anodizing is an electrochemical process. The aluminum is the anode in a sulfuric acid bath. A current of 1.5 A/dm² is applied. The resulting aluminum oxide layer is 15 to 25 microns thick. The hardness of the anodic layer is 250 - 350 HV. This layer is integral to the metal and cannot peel or flake. The sealing of the pores is achieved through hot water at 95°C for 30 minutes.

Component Inventory List for a Standard Sliding Window

A single 2-track sliding window unit with a retractable screen contains the following components:

• Main Frame Head Profile: 1 piece
• Main Frame Sill Profile: 1 piece
• Main Frame Jamb Profile: 2 pieces
• Sash Vertical Profile (Interlock): 2 pieces
• Sash Vertical Profile (Jamb side): 2 pieces
• Sash Horizontal Profile: 4 pieces
• PA66GF25 Thermal Break Strips: 8 to 12 pieces
• EPDM Glass Gaskets: 4 lengths
• EPDM Frame Gaskets: 4 lengths
• Glass Units: 2 pieces
• Adjustable Rollers: 4 pieces
• Multi-point Lock Actuator: 1 piece
• Lock Keeps/Strikers: 2 to 4 pieces
• Handle: 1 piece
• Retractable Screen Cassette: 1 unit
• Screen Guide Rails: 2 pieces
• Corner Cleats (Aluminum): 8 pieces
• Screw Covers: 8 to 12 pieces
• Drainage Caps: 2 to 4 pieces

Engineering Calculations for Wind Load Deflection

The deflection (f) of the aluminum mullion is calculated using the formula: f = (5 * w * L^4) / (384 * E * I). Where:

• w: Wind load per unit length (N/mm)
• L: Span of the mullion (mm)
• E: Modulus of elasticity for aluminum (70,000 N/mm²)
• I: Moment of inertia of the profile section (mm^4)

The maximum allowable deflection for windows is L/175 or 20mm, whichever is smaller. For a window with a wind load of 2.0 kPa and a span of 2400mm, the required moment of inertia (I) is determined to select the profile series (e.g., 100 series, 120 series, or 150 series). The safety factor used in these calculations is 1.5.

EPDM Gasket Material Specifications

The gaskets used for sealing the glass and frame are made of EPDM (Ethylene Propylene Diene Monomer). The material properties include:

• Hardness (Shore A): 60 - 70.
• Tensile Strength: 7 MPa minimum.
• Elongation: 250% minimum.
• Compression Set: 20% maximum (24h at 70°C).
• Temperature Resistance: -40°C to 120°C.
• Ozone Resistance: No cracking at 50 pphm (20% strain, 48h).

Engineering Comparison of Hardware Brands

Shipping and Packing Standards for Export

Windows exported from Foshan are packed according to maritime transport standards:

• Layer 1: PE Stretch film to prevent surface scratches.
• Layer 2: Cardboard corner protectors at each of the four corners.
• Layer 3: Bubble wrap or EPE foam sheet for impact absorption.
• Layer 4: Plywood crate with 10mm thickness. Crates are sized to the dimensions of the window units.
• Crate Base: Palletized base for forklift access.
• Security: Steel banding around the plywood crates.

Conclusion

The production of sliding windows with retractable screens in Foshan, China, is governed by material science and engineering standards. By utilizing 6063-T5 aluminum, PA66GF25 thermal breaks, and hardware from SIEGENIA, ROTO, or HOPO, manufacturers provide window systems that meet international certification requirements such as AS2047, CE, and NFRC. The 2026 pricing for these systems is based on engineering specifications and volume requirements for B2B procurement.

2026 Project Case Study: Foshan Export to Australia

A residential project in Sydney, Australia required 120 units of aluminum sliding windows with retractable screens. The specifications included 6063-T5 aluminum with 1.6mm wall thickness and double glazing (5mm + 12A + 5mm). The hardware was sourced from HOPO. The units passed the AS2047 deflection and water penetration tests. The shipment was delivered in two 40HQ containers within 45 days of order confirmation.

Frequently Asked Questions for B2B Procurement

Question: What is the lead time for a 20GP container of sliding windows from Foshan?

Answer: The standard lead time is 25 to 30 days after drawing approval and deposit receipt.

Question: Can the mesh material be specifiedized for high-salinity coastal areas?

Answer: Yes, for coastal regions, we provide 316-grade stainless steel mesh or specialized high-density polyester mesh to resist salt corrosion.

Question: Are the window profiles compatible with smart home automation systems?

Answer: The systems are designed to accommodate tubular motors for automated sliding and screen deployment, compatible with Zigbee or RS485 protocols.