Steel heat insulation fireproof door
A fire door, steel technology, used in the field of fire doors, can solve problems such as easy deformation, fire doors cannot prevent fire and smoke overflow, fire doors are not strong in fire resistance or high temperature resistance, etc.
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[0025] The present invention will be further described in the following embodiments in conjunction with the accompanying drawings, the purpose is only to better understand the present invention, and the examples given are not intended to limit the protection scope of the present invention.
[0026] see Figure 1 to Figure 5 , the steel heat insulation and fireproof door described in this embodiment is composed of a door frame 1 and two opposite door leaves 2. A lock 6, a fireproof door closer 4 is arranged between the door frame 1 and the door leaf 2; the hinge 5 is a fireproof hinge; the door lock 6 is a fireproof lock.
[0027] The case of the door frame 1 is made of cold-rolled galvanized steel sheet, and cement mortar 12 is poured into the case; the cement mortar 12 is prepared from cement, sand and expanded perlite at a ratio of 1:2:5.
[0028] The door leaf 2 is composed of a skeleton 3 and a door leaf panel 9. Both the skeleton 3 and the door leaf panel 9 are rolled an...
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