Henan fire door can be classified into Class A fire door, Class B fire door and Class C fire door. Class A can meet the requirements of fire resistance, heat insulation and fire integrity at the same time within the specified time. The specific fire resistance rating is Class C fire door, Class B fire door and Class A fire door. Class B fire door is called partial thermal insulation fire door, and its fire resistance performance is required to be 0.5h. Class C fire door is called non thermal insulation fire door, which has no specific requirements for fire resistance and heat insulation, as long as it meets the fire integrity within the specified time. In daily use, Class A fireproof doors are widely used. Here is a detailed introduction to Class A fireproof doors:
Fire door rating - Class A
Grade A fire door in the classification of fire doors is an important part of fire equipment and an important step in social fire prevention. The quality and use of Grade A fire doors are related to the success or failure of fire prevention. The materials of Class A fire doors are steel and wood. The fire resistance time of Class A fire doors is not less than 1.5 hours. Only when this is met can they be called Class A fire doors. The interior of Grade A fireproof door generally adopts perlite, and a small amount of it also uses vermiculite fireproof board, foam door core board, MC compliance materials and other fireproof materials. The thickness of Grade A fireproof door is generally 50mm. Class A fireproof doors are generally installed in places with strict requirements on fire performance.
Fire door rating - Class B
Class B fire door in fire door classification is widely used in family fire prevention. It is a key step in family fire prevention. The production of wooden fire door must be dried and flame retardant, and the hardware fittings used on the fire door must also use fire hardware fittings. The fire resistance time of Class B fire doors is not less than 1.0 hours. The use of Class B fire doors plays an important role in our family fire prevention, protecting our lives and property, and playing an important role in family fire prevention.
Fire door rating - Class C
Cold rolled steel plate and stainless steel are generally selected as the materials of Class C fire doors in the classification of fire doors, and filled with environmental friendly and healthy thermal insulation materials. In case of fire, Class C fire doors can prevent the spread of fire and reduce smoke activities, provide valuable time for personnel evacuation and ensure the safety of personnel. The fire resistance time of Class C fire door shall not be less than 0.5 hour, and the accessories used for Class C fire door must undergo fire prevention treatment to meet the specified fire resistance limit.
