What are the purchasing tips for door and window profiles?

When purchasing door and window profiles, you need to comprehensively consider the material, performance, technology and usage scenarios. The following are the key purchasing techniques and precautions:

Profile material selection

Broken bridge aluminum doors and windows

Advantages: Thermal insulation strip (PA66 nylon) blocks heat conduction, has excellent thermal insulation performance, strong wind pressure resistance, and is suitable for high-rise, severe cold or street-facing environments.

Parameters: The profile width is recommended for series 70 or above (80 series with high-rise layers), the wall thickness is >1.8mm (new national standard), and the cavity structure needs to be designed to disperse pressure.

Plastic steel doors and windows

Advantages: Low price, good insulation, but prone to aging and deformation, and the internal steel lining thickness is >1.5mm support strength is required. Avoid pits: Avoid snow-white profiles (easy to age), preferably cyan white and without bubbles on the cross section, strong-textured aluminum alloy doors and windows

Applicable scenarios: high strength but fast heat conduction, suitable for areas with limited budget or non-II climates, wall thickness must be >1.4mm (old national standard)