Wind Resistance, watertightness, air tightness, referred to as three. The third test is that after the construction is completed, the construction party entrusts qualified or designated by the owner to carry out the test. The test is qualified and the report is completed.
The physical properties of doors and windows include air penetration, rainwater leakage, wind pressure resistance, heat preservation, sound insulation, lighting, etc. Only doors and windows with special requirements need to be tested for the latter three performances in most areas of the country; The first three performances are required for inspection in door and window type inspection, the physical triality of doors and windows generally refers to these three performances.
Among the three properties of doors and windows, the wind pressure resistance performance is classified as 1-9, the air tightness performance is classified as 1-8, and the water tightness performance is classified as 1-6. The three indicators of our wide-window panoramic balcony window have all passed the professional inspection of the National authoritative department and reached extremely high standards. They belong to the top students in the field of doors and windows.
The physical properties of doors and windows include air penetration, rainwater leakage, wind pressure resistance, heat preservation, sound insulation, lighting, etc. At present, only doors and windows with special requirements need to be tested in most areas of the country. The first three performances are required in door and window type inspection, the physical triality of doors and windows generally refers to these three performances.
