product function

(1) Prevent the direct convection between the partitioned space and the outside air, and form a certain negative pressure in the partitioned space to reduce the pollution of the partitioned space to the outside world.

(2) Ensure that the passage is not affected by hot steam waves.

Product form

(1) Semi-airtight door (single open, double open); 

(2) Fire-proof semi-airtight door (single open, double open); 

(3) Airtight doors (single open and double open)

(4) Fire-proof airtight doors (single open and double open);

 (5) Airtight door with handwheel (single open);

 (6) thermal insulation airtight door

(1)Semi-airtight door (single open, double open)

A. The strength of main parts has been calculated to ensure their safety;

B. On the premise of ensuring the overall rigidity of the door, the structural design is light;

C. The product has air tightness function;