Push and pull type fire resistant steel doors have been developed from galvanized steel. Accessible in standard thickness range, this hinge fitted steel door deserves praise for its exceptional strength and long lasting quality.  Polystyrene or hard honeycomb core based filling of this door makes it completely flame proof.  These doors maintain around 180 degree maximum opening angle.  Powder coated surface finish of these highly durable doors remains corrosion protected for years. Low maintenance cost, precise diameter and quick installation process are some of the key aspects of these doors.