Allgemeines » How to divide the grade of fire doors

How to divide the grade of fire doors
There are three levels of fire doors aluminum windows manufacturer
1. Grade A
Not less than 1.2h
2. Grade B
Grade B is not less than 0.9h
3. Grade C
Grade C is not less than 0.6h
Fire doors can also be called Class A, B, C
Class A
Also known as a fully insulated fire door, it can meet the requirements of fire insulation and fire integrity at the same time within the specified time. The fire resistance grades are 0.5h (Class C), 1.0h (Class B), 1.5h (Class A) ) And 2.0h, 3.0h.
Type B
Also known as partially insulated fire doors, its fire resistance and heat insulation requirements are 0.5h, and the fire integrity levels are 1.0h, 1.5h, 2.0h, and 3.0h respectively.
Type C
It is also called non-insulated fireproof door. It has no requirements for its fire resistance and heat insulation. It only meets the requirements of fire resistance integrity within the specified fire resistance time. The fire integrity levels are 1.0h, 1.5h, 2.0h, and 3.0h respectively. In the British BS standard, there are non-insulated fire doors.

industrial style windows for residential
small folding patio doors
aluminum windows and doors company
window and door certification