Exterior Aluminum Doors and Frames

2025,10,15

Exterior Aluminum Doors and frames are made from extruded aluminum alloy profiles. These components are manufactured through surface treatment (anodizing, powder coating, etc.), cutting, drilling, and other processes. These doors and frames are assembled with connectors, hardware, and glass to create a door system.

According to the opening method, they are categorized as sliding, casement, folding, and hanging.

According to the aluminum profile width, they are categorized into 50 series, 55 series, and 65 series. They comply with the GB/T8478-2020 standard. Exterior doors must have a base thickness of at least 2.2 mm, while interior doors must have a base thickness of at least 2.0 mm.

1. Appearance and Design Differences

Overall Style:

In northern China, thick aluminum profiles (wall thickness ≥ 2.2 mm) are typically used in calm styles, such as tangerine and checkered patterns. Door frames feature strong lines and are typically painted in low-saturation colors like dark gray and bronze, complementing both Chinese and European architectural styles. In southern China, thin aluminum (1.8-2.0mm thick) is primarily used with vibrant stained glass designs, such as latticework, ice sculptures, and shallow carvings. Door frames feature sleek lines and are available in bright colors like champagne gold and rose gold, perfect for modern or minimalist styles.

Design Details:

Sliding door frames feature a dust barrier at the bottom to prevent dust intrusion; casement door frames utilize concealed hinges for enhanced aesthetics; and folding door frames feature a synchronized telescopic mechanism to ensure smooth opening and closing.

2. Material Properties and Performance Advantages

Physical Properties:

Lightweight and High-Strength: Aluminum alloy has a density of 2.7g/cm³, only one-third that of steel, yet boasts a tensile strength of 200-300MPa, making it suitable for large glass areas (single pane area ≤ 3㎡).

Corrosion Resistance: The anodized surface layer has a thickness of ≥10μm and withstands 1000 hours of salt spray testing without corrosion, making it suitable for coastal areas or high-humidity regions. Thermal Stability: The linear expansion coefficient is 23×10⁻⁶/°C, close to that of glass (8×10⁻⁶/°C), reducing deformation caused by temperature differences.

Sealing Performance:

The EPDM rubber sealing strip achieves airtightness of GB/T7106-2008 standard level 6 (air permeability per unit seam length ≤ 1.5 m³/(m·h)) and watertightness of level 3 (no leakage under a pressure differential of 500 Pa).

3. Application Examples

Residential Projects:

The villa project utilizes 65-series sliding aluminum doors with a 2.2mm thick door frame and 6mm+12A+6mm insulating glass. The sound insulation reaches 35dB, raising indoor temperatures by 3-5°C in winter compared to ordinary doors and windows.

Commercial Buildings:

Shopping malls use 90-series swinging aluminum doors with 2.5mm thick door frames and 10mm+12A+10mm tempered laminated glass. They offer wind pressure resistance up to level 9 (4.5kPa), and can withstand a level 12 typhoon.

Extreme Environment Applications:

Coastal hotels use weather-resistant aluminum doors with a fluorocarbon spray coating ≥ 40μm thick, proven corrosion-free after a five-year salt spray test. Stainless steel anchors are used at the door frame-to-wall connection to prevent seawater erosion.

4. Selection Guide and Key Parameters

Performance Requirements:

For high wind pressure areas: Choose a 90-series or higher door frame with a wall thickness ≥ 2.5mm, a multi-point locking system (≥ 5 locking points), and wind pressure resistance up to level 9.

Soundproofing Requirements: Choose insulated glass (12-15mm air layer thickness) with soundproofing seals for a sound insulation performance of 40dB or higher. Insulation Requirements: Choose thermally insulated aluminum profiles (insulation strip width ≥ 24mm), with a heat transfer coefficient (K) ≤ 1.8W/(m2·K).

Environmental Adaptability:

For high-temperature regions: Choose heat-resistant aluminum (heat deformation temperature ≥ 150°C) with sunshade Low-E glass (shading coefficient Sc ≤ 0.5).

For cold regions: Choose cold-resistant sealing strips (brittle temperature ≤ -40°C) with argon-filled insulating glass (argon concentration ≥ 90%).

5. Customization Options and Process

Dimension Customization:

Non-standard dimensions are available (doorway width ≤ 3m, height ≤ 4m). Accurate measurements (error ≤ ±2mm) are required, and consideration must be given to the finished floor height (allowing a 5-8mm installation gap).

Color and Finish:

A full range of RAL color options are available. Processes such as wood grain transfer (grain definition ≥ 0.5mm) and fluorocarbon spray coating (film thickness ≥ 35μm) are supported. Customization may increase the customization time by 3-5 days.

Glass and Hardware Configuration:

Glass options include clear, coated, and laminated. Hardware options include brand names. Customization will take 7-10 days.

Author:

Ms. Rebecca Lee

E-mail:

sale01@wddoorwins.com

Phone/WhatsApp:

+86 13502225784