2. The door leaf is made of 5.0mm carbon steel plate, and the door is reinforced with 50mm*70mm*3.0mm square tube keel.

3. The door lock is a mechanical handwheel explosion-proof lock. 3. Detailed knowledge introduction of explosion-proof door: Explosion-proof door refers to the structure that meets the requirements of fire stability, integrity and grid insulation in a certain period of time, and is mainly used for fire partition of firewall, stairwell entrance and exit, evacuation walkway and pipeline wellhead. In case of fire, it can prevent the spread of flame and the flow of burning smoke, and play a positive role in the work of sealed air system.