Description Fire-rated blast doors represent the ultimate in protective opening technology. Designed for “worst-case scenarios,” these doors are constructed from high-tensile reinforced steel and heavy-duty internal stiffeners that allow the door to absorb and dissipate the shockwaves of an explosion without catastrophic failure. Unlike standard doors that might buckle under pressure, a blast-rated assembly is tested for specific PSI (Pounds per Square Inch) and impulse levels. When a blast is followed by a fire?common in industrial accidents?the door?s fire-rated core and specialized seals prevent the spread of flames and toxic smoke. These doors are provided as a complete, factory-tested assembly including the frame, heavy-duty hinges, and multi-point latching systems to ensure the entire opening remains secure under the most extreme dynamic loads. Key Features Blast Overpressure Resistance: Specifically rated to withstand pressures ranging from 1 to 20 PSI (and higher for custom military specs). Dual Protection: Combines explosion mitigation with certified fire integrity (typically 60, 90, or 120 minutes). Blast Response Categories: Available in ratings from Category I (remain operable after blast) to Category III (remains a barrier but may be inoperable). Reinforced Hardware: Equipped with massive, high-load hinges and multi-point “dead-bolt” latching to prevent the door from being blown off its frame. Energy Absorption: The door leaf is designed to deform slightly to absorb the blast energy, protecting the building?s structural integrity. Seismic & Ballistic Options: Can be further upgraded to include bullet resistance and seismic protection for critical infrastructure. Technical Specifications Fire Rating: 60, 90, 120, and 180 Minutes Blast Pressure: Typically 3 PSI to 20 PSI (customizable to project specs) Standards: ASTM F2247, ASTM F2927, UL 10C, NFPA 252 Material: Heavy-duty Cold Rolled or Stainless Steel (14 to 10 Gauge ) Internal Structure: Reinforced with vertical steel stiffeners and high-density mineral wool Response Levels: Category I, II, or III (per ASCE guidelines) Handing: Single or Double Leaf (Seated or Unseated in frame) Closing Mechanism: Heavy-duty hydraulic closers with “fail-secure” latching Dimensions: Customisable within certified limits
