Steel fire doors are impact resistant, with structural strength that can withstand long-term collisions without reducing fire protection, and can withstand the impact of fire hydrants. The thermal deformation rate of steel fire doors is low, and the bending curvature of the deformation after heating is low.

https://ztfiredoor.com/19267.html

3 hour fire rated door,attic door fire rated,fire rated basement door,fire resistant pocket doors,fire resistant interior door,glazing in fire rated doors,3 hour fire rated door,fire resistant door to garage,fire rated basement door,insulated fire rated door,fire resistant interior door,fire rated insulated door,3 hour fire rated door,modern fire rated doors,fire rated basement door,fire resistant interior door