Comparison of Fire Resistance Performance
1. Grade A Fire Door
Fire Resistance Limit: ≥ 1.5 hours, ensuring the highest level of integrity and insulation.
Applicable Scenarios: Tailored for firewalls, oil storage facilities, power distribution rooms, cinema auditoriums, and other high fire-risk areas.
2. Grade B Fireproof Door
Fire Resistance Limit: ≥ 1 hour, providing robust protection.
Applicable Scenarios: Ideally suited for high-risk areas such as evacuation stairwells, vestibules, and standard equipment rooms.
3. Grade C Fireproof Door
Fire Resistance Limit:≥ 0.5 hours, ensuring dependable safety.
Applicable Scenarios: Perfect for cable shafts, pipe shafts, smoke exhaust ducts, and other low-risk vertical pipe shafts.
Audited Supplier 
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