1. Wooden stairs fire district fire door is mainly used for high-rise buildings, corridors, elevator, room tubewell, electricity well, can also be used in oil depots, theater, dance and part residential. Features 2 wood fire doors are lighter weight than steel doors, the availability of fire performance, sealing strong, foundation insulation, thermal insulation capability, to retain the natural beauty of the wood grain, so wooden fire door and interior seamless. 3. Fire resistance: Class A is greater than 1.5 hours, 1.0 hours more than B, Class C is greater than 0.5 hours. Features The wooden fire door is weighing less than steel fire doors, fire performance, sealing strong, on the basis of sound insulation, thermal insulation capability, while preserving the natural beauty of the wood grain to match the user's interior natural combined, seamless, gives elegant, reply, pleasing visual enjoyment. 5. Wooden fire doors must be fire-retardant wood out, I am using special equipment, 2MPa under pressure for a variety of chemical-based materials into ammonium polyphosphate fire retardant liquid dispensing device of the wood Sen through processing. Treated wood flame retardant, anti-corrosion, shock resistance.