High-flame-retardant steel fireproof door made of environment-friendly filling material
A technology for filling materials and fire doors, which is applied in the field of fire doors and can solve problems such as poor fire performance of fire doors
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[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0030] See Figure 1-8 As shown, the present invention is a high flame-retardant steel fire door with environmentally friendly filling materials. It includes a fire door housing 1. A storage box placement cavity 101 is opened inside the fire door housing 1. The bottom end surface of the inner wall of the storage box placement cavity 101 There are three lower grooves 102 on the top, three upper chutes 103 are opened on the top surface of ...
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