Revision content | 2012 edition | 2023 edition |
---|---|---|
Standard integration | GB/T 28886/28887 separated | Unified as GB/T 28886 |
Energy-saving classification | Not clear | Three new levels of ordinary/energy-saving/low-energy consumption |
Reinforced steel | Appendix C | Upgraded to normative Appendix B |
Heat transfer coefficient | Single requirement | Grading index refined to 1.1W/(m²·K) |
Key improvements: Profile base material density ≤1480kg/m³, main profile visible surface wall thickness requirements:
Aluminum clad plastic doors and windows The actual measured thickness of the aluminum gusset plate is ≥1.2mm, and the hardware must be made of 410 stainless steel.
The highest grade P₃≥5.0kPa, deflection requirements of main load-bearing members:
Grading | Heat transfer coefficient K value range |
---|---|
Grade 10 | K<1.1 |
Grade 8 | 1.3≤K<1.6 |
GB/T 28886-2023 Plastic windows and doors for buildings has been changed from GB/T 28887-2012 Plastic window for buildings.
Copyright ©2025 All Rights Reserved