Introduction to the role of steel fire doors
What we need to check is whether its raw materials are high-quality fireproof materials, including its door leaf, door frame and the stuffing inside the door; and whether it has reached the corresponding fireproof according to the division of fireproof standards.
When buying a fire door, you must first judge the quality of the fire door by its appearance. If it is a good fire door, the distribution of solder joints on the appearance will be relatively uniform, without obvious defects, and the spray paint will appear smooth.
Airtightness requirements for fire doors
Steel fire door refers to the door frame, door leaf frame and door leaf panel made of steel material. If the door leaf is filled with material, it is filled with non-toxic and harmless fire-proof and heat-insulating material, and it is composed of fire-proof hardware accessories.