How to distinguish the grade of Henan fire door

In daily life, many new users, or decoration companies, are fooled by others when they choose the fire door grade because they can't distinguish between Grade A and Grade B,

Disaster causes casualties, which is more than gain. Now I will teach you how to distinguish the grade of a fire door.

see Henan fireproof door The product inspection report, certificate of conformity, production license, electronic ID card of fire door and other fire protection acceptance data when leaving the factory indicate the material and fire door grade.

see Henan fireproof door The nameplate of the manufacturer on the door frame indicates the name, address and contact information of the manufacturer, as well as the material and fire rating.

In order to further confirm that the grade of fire door is correct, it can also be verified by measuring the specification of fire door. The thickness of steel Grade A door frame is generally 120mm, and the thickness of door leaf is 50mm; The thickness of steel grade B door frame is generally 110mm, and the thickness of door leaf is 45mm; The thickness of steel grade C door frame is generally 100mm, and the thickness of door leaf is 42mm; The thickness of wooden Grade A door frame is generally 100mm, and the thickness of door leaf is 45-55mm; The thickness of wooden Grade B door frame is 100mm, and the thickness of door leaf is 40-50mm; Henan fireproof door The thickness of wood grade C door frame is also 100mm, and the thickness of door leaf is 40mm.

As one of the measures for building fire separation, fire doors are usually used on firewalls, stairwell entrances or tube well openings to prevent the spread and spread of smoke and fire.