The fire resistance time of a fire door is primarily determined by the fire-resistant board. Generally, Class A fire doors use fire-resistant boards with superior performance compared to Class B fire doors, resulting in overall superior performance. Furthermore, Class A fire doors are particularly suitable for applications requiring fine grinding before electroplating, excellent vibration testing, mirror polishing with hand tools, and mirror polishing of heating elements, such as the polishing of various furniture hardware accessories, the cutting and polishing of hand tools, and the surface polishing of everyday products and DIY painting accessories.
Class A fire doors with integrated door frames offer greater flexibility in door frame customization, making door opening design more convenient, labor-saving, and time-saving.
