Structure and Performance to Understand Fire-Resistant Cable Trays  As for the槽式 cable trays and glass fiber reinforced plastic trays, we have mentioned them before. Besides these, there are also common types such as ladder cable trays, combined cable trays, and tray cable trays. Today, Huilian is here to share all these, but specifically, the fire-resistant cable trays. How much do you know about these trays?  Characteristics of Fire-Resistant Cable Trays  Fire-resistant cable trays are mainly composed of fire-resistant boards made from glass fiber reinforced materials and inorganic binders, combined with metal frames and other fire-resistant materials. The outer layer is coated with fire-resistant paint, so that the fire-resistant cable trays do not burn when exposed to fire, thus preventing the spread of the fire, and have good fire-retardant and fire-resistant effects. They are also fire-resistant, oil-resistant, corrosion-resistant, non-toxic, and pollution-free. The overall installation is convenient, the structure is reasonable, the service life is long, and they are also aesthetically pleasing. Cables installed in the cable trays are in a clean environment, making cleaning easy. The fire-resistant paint has the characteristics of thin coating, high fire resistance, and strong adhesion.  Process Materials, Structure, and Performance of Fire-Resistant Cable Trays  The steel frame is mainly made from cold-rolled steel plates through mechanical processing, featuring high load-bearing capacity and long service life. The cross-section of the steel frame is neat without burrs or sharp corners, and the inside of the channel is smooth and even without sharp protrusions.  ① After processing, the cross-section shape is uniform, without bends, twists, cracks, or edges.  ② The fire-resistant board is made from silicon and calcium materials as the main raw materials, mixed with a certain proportion of fiber materials, lightweight aggregates, binders, and chemical additives, and produced through advanced autoclave technology.  ③ The fire-resistant paint is a steel structure protective product. It is made from selected high molecular weight synthetic resins as the film-forming material, mixed with flame retardants, foaming agents, carbonization agents, and high-temperature refractory materials. Under high-temperature conditions, the coating undergoes a continuous foaming expansion effect, forming a flexible, sponge-like carbonized insulation layer, preventing the steel structure from softening and deforming rapidly due to the intense heat of the flames, and maintaining its strength. The surface fire-resistant paint layer requires uniform, smooth application with no obvious color differences.  ④ The structural graphics can be seen in the steel槽式 cable tray series. The inner layer is added with a fire-resistant board or fire-resistant paint, and the fire-resistant board is securely fixed to the tray.  Materials and Main Parameters of Fire-Resistant Cable Trays  The products are strictly in accordance with the Q/321182?? APJ001—2004 enterprise standard and GB8624—1997 national standard.  In addition, there are also many types of fire-resistant cable tray products, and they are not listed one by one here. Each type of tray has its unique function. Only by thoroughly understanding them can one make appropriate choices and applications.