Key materials and construction techniques for fire resistance Fire rated metal doors aren’t just sheets of steel. Their effectiveness lies in their engineered core and components: Core materials: Honeycomb, steel stiffened, polystyrene, or ceramic infill. Steel skins: Galvanized or stainless steel sheets encase the core. Intumescent seals: Expand under heat to seal gaps around the door. Reinforced frames and hinges: Prevent door deformation under fire conditions. Each door undergoes rigorous testing to ensure it performs as intended during a real fire scenario.https://airmasteremirates.com/....product/fire-doors-a
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