1. The door frame adopts a double notch widening design, and can be built in reinforced channel steel, with good overall strength;

2. The interior of the door leaf is filled with high-strength green fireproof materials, with Class A fire resistance;

3. The combined armored structure of door leaves has strong overall deformation resistance and overcomes the damage to the door caused by wind pressure during subway operation;

4. Purpose location: Used for intersectional communication channels in subway tunnels and occasions with wind pressure resistance requirements.

Hardware features:

1. Select heavy-duty hinges or heavy-duty door shafts to ensure that the door frame and door leaf are firmly connected;

2. Specially designed high-strength multi-point escape lock ensures effective locking;

3. Adopt heavy-duty door closers to meet the life requirements of continuous opening and the requirements of harsh environment use.

4. Safety configuration: standard-anti-chain separation;

                     Optional--signal feedback/sound and light alarm/remote monitoring.