| Quality Index of Doors and Windows |
| No. |
Name |
Unit |
Series |
Reached Index |
Class |
Measuring
Standard |
| 1 |
Strength
of Repelling Wind Pressure |
kg/m2(Pa) |
45 |
>150(1500) |
5 |
GB7106-86 |
| 60 |
>350(3500) |
1 |
| 85 |
>300(3000) |
2 |
| 2 |
Permeability
of Preventing the Air |
m2(Mh) |
45 |
<0.5 |
1 |
GB107-86 |
| 60 |
<0.5 |
1 |
| 85 |
<2.5 |
3 |
| 3 |
Permeability
of Preventing
the Rainwater |
kg/m2(Pa) |
45 |
>35(350) |
2 |
GB7018-86 |
| 60 |
>50(300) |
1 |
| 85 |
>24(250) |
3 |
| 4 |
Noise-reduction
Parameters |
dB |
|
26-31 |
4 |
|
| 5 |
Coefficient
of heat insulation |
K |
60 |
<2.52 |
2 |
GB11793.1-89 |
|
Measuring ORG.: China Building Science Academy Physics Institute |