The application of fire doors in buildings is very common. Fire doors not only play a role in fire prevention, but also install flame retardant door brush strips on the door seams to prevent smoke from leaking out, and are mainly used as important fire fighting equipment in buildings. It is also an important part of social fire prevention. In order to ensure the use effect of the fire door, a fire door closer can be installed, of course, a door closing device can also be installed so that the normally open fire door can automatically close the door leaf when a fire occurs. Except for some special parts (pipe well doors) in fire doors that do not need installed door closers, it is still relatively common to install fire door closers. Next, the structural materials and characteristics of steel-wood fire doors are introduced.

Steel wood fire door structure material:

1. Steel fire doors include all-steel fire doors and steel-wood fire doors. These two fire doors are slightly different in material.

2. The door frame, door leaf frame and door leaf panel of the all-steel fire door are all made of steel materials. The door leaf is filled with non-toxic and harmless fire and heat insulation materials, and then fire-proof hardware accessories are used as connectors and fasteners. , it constitutes a steel fire door with excellent fire resistance.

3. Steel and wooden fire doors use steel and fire-resistant wood to make door frames, door leaf skeletons, and door leaf panels, and the interior is also filled with fire-resistant materials. Steel-wood fire doors not only have excellent performance in fire prevention and heat insulation but also have a strong decorative effect. There are many styles of such fire doors produced by fire door manufacturers, which are novel, fashionable, and favored by customers.

Steel wood fire door structure features:

1. Combined type: steel anti-theft door core, secondary external patented environmental protection flame retardant heat insulation fireproof composite board plus modeling finish. Based on the unique advantage of entirely relying on the fire prevention of the board itself without the need for the traditional process of filler fire prevention, the combined external hanging design is possible; the inner and outer door panels and the inner and outer door sleeves are all removable and rear-mounted, and the door frame adopts the overall on-site combined installation structure of accessories, The frame materials are all standardized and detachable combinations, with high precision, convenient installation, and transportation, which not only solves the problem of fire-proof broken bridges but also has a new effect of rear decoration;

2. Stability: steel and wood are combined, and yin and yang face the resisting stress, after the inner plate is fixed with screws, hang the outer plate, and then tighten the screws around, the stress cancels each other, the two materials of steel and wood are complementary to each other, and the structural stability is excellent. On traditional wood and steel doors. The wood veneer lines are bidirectionally positioned and fastened by metal components, the positioning is accurate, the deformation is prevented, and the installation is simple, firm, and reliable.