- 29
- Jul
Strong Galvanized Steel Fireproof Rated Doors
- 30
- Հուլիս
- 29
- Հուլիս
The steel fire door is made of galvanized steel, with an oxide protective layer and an anti-ultraviolet coating on the outside. The steel fire door material is sandwiched with a layer of “perlite board,” or other fireproof material, which can well isolate the fire and prevent the fire from spreading.