Grade A steel fire door is good or not Grade A steel fire door specification
There are more and more fire doors on the market. Grade A steel fire doors are mainstream products. Good fire performance is loved by many people. What about Grade A steel fire doors ? Next, let's take a look together!
How about Class A steel fire door
Among them are reinforced wooden doors, which are often used indoors, that is, steel-wood doors, also known as steel-wood composite doors. In fact, it is a structure made of steel bars inside, and then sealed with MDF or wood board. There is also a steel-wood door made of three layers of materials â• â• steel plate + wooden grid keel + steel plate, and the surface is covered with pvc film with real texture of wood grain. It does not contain harmful substances, is strong and does not deform and crack, and it can not see the coldness of metal materials. The price is low and economical.
Steel-wood doors are the perfect combination of the advantages of solid wood doors and composite doors, and the best supplement to the shortcomings. They are easy to install, save time, labor, materials and money, and are economical products. The door frame, door leaf panel and its reinforcement are made of cold-rolled steel plate. Steel plate thickness (mm): door frame: 1.2-1.5 door leaf panel (mm): 0.8-1.2 without screw hole reinforcement (mm): 1.2-1.5 with screw hole reinforcement ≥3.0 door leaf and door frame should be filled with non-combustible materials.
The melting test of locks, hinges, bolts and other hardware accessories is not less than 950 ° C. There is a cover between the double doors, and there is a door closer. The door frame is equipped with a sealing groove. article. Fire resistance limit: The fire resistance test is carried out for 54min: no loss of integrity; the highest average temperature rise of the back fire surface is 57.3 ℃, the highest single-point temperature rise is 98.8 ℃, and the fire resistance limit is> 1.2h
Grade A steel fire door specification
1. The door leaf is made of composite plastic plate, which is embossed and combined with wooden inner ribs. It is not deformed, cracked, impact-proof, and environmentally friendly; it is free of paint, free of formaldehyde, toluene, and radiation pollution; insect-proof, moisture-proof, and thermal insulation heat.
2. The door frame is made of 2cm or more laminates and solid wood, with high-quality PVC film, no deformation, no cracking, green environmental protection, and beautiful appearance.
3. The lines are made of high-quality wood-plastic extrusion, waterproof, moisture-proof, insect-proof, green and environmentally friendly, easy to install, no nail opening.
4. After the installation of the overall effect, the door leaf, door frame and lines are complete, the texture is clear, the appearance is elegant, and the luxury is luxurious.
Disadvantages of fire doors: The disadvantage is that the price is more expensive, more easily deformed, not suitable for use in the north. Too heavy, easy to deform when wet.
Installation of Grade A steel fire door
In the installation process of steel fire doors, considering the problem of bending and deformation of the door frame, the wooden frame should be supported in the width direction of the door frame, the foot of the door frame is buried 20mm below the ground, and then the door frame and the embedded parts on the wall are welded. Then open a hole in the wall on the upper corner of the door frame, and inject concrete with cement, sand, and expanded perlite (1: 2: 5), which can be used after the concrete has set.
Regarding the Grade A steel fire door , I will introduce it here. I hope it will help you. More decoration information is available on this website, so stay tuned.
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