Fireproof cable tray is a popular cable tray product now, and the important reason is of course that it has a certain fireproof effect. But fire-resistant cable trays and fire-resistant cable trays are indeed two very different concepts. Let's get to know each other and see how to distinguish:

Sheet metal fire cable tray:

The fire cable tray is mainly composed of glass fiber reinforced material and inorganic adhesive composite fire board and metal skeleton composite and other fire base materials. It adopts a steel shell, a double-layer fireproof cover plate, and a built-in inorganic fireproof groove box. The average thickness of the thermal insulation layer is 25mm, the double-layer cover is ventilated and dissipated, and the fire-resistant paint is sprayed inside. When the fire-resistant cable tray is caught in fire, the paint expands, blocks the cooling holes, and protects the cables in the box. The fire performance of the inorganic fireproof tank box has passed the 60-minute fire resistance test by the National Fixed Fire Resistance Test Center, and the cable is not damaged. The structure of the support is good, and the inorganic fireproof tank can be effectively fixed.

Ladder rack refractory cable tray:

The side panels are drawn and formed by a forming machine, which increases the bending strength of the refractory cable tray; the side panels and bottom panels are made of advanced technology, and the surface is smooth and smooth; The inner pad is added with aluminum silicate rock wool and fireproof board to prevent heat conduction; the refractory cable tray is equipped with a dust cover, which is supported by special materials. When a fire occurs, the dust cover falls off and seals all the heat dissipation holes on the cover to achieve fire prevention. Effect; The product meets the national fire protection standard.

Fire-resistant cable tray means that the structure is made of fire-resistant materials or coated with fire-resistant coating, and fire-resistant cable tray means that it is relatively burnt and will not collapse or disintegrate under short-term high temperature; both performances are good, The difference is only a matter of cost.

The difference between fire-resistant cable tray and fire-resistant cable tray

The shell structure is different, the fire burning temperature is different, and the fire resistance time is different.

The shell structure is different:

• Refractory cable tray: The shell and heat insulation layer of the refractory cable tray are made of fire-resistant materials with high temperature resistance ≥ 1100 °C and insulating materials with high temperature resistance ≥ 300 °C.
• Fireproof cable tray: The shell of the fireproof cable trays is added with a fireproof partition, and some shells are coated with fireproof paint.

The combustion temperature of the fire is different:

• Refractory cable tray: The fire of the refractory cable tray will not burn until the combustion temperature reaches a high temperature of 920-1050 °C.
• Fireproof cable tray: The fire burning temperature of the fireproof cable tray reaches about 800 degrees.

Different processes, different colors and different lifespans:

The two types of cable trays have different processes, different thicknesses of zinc layers, and different surface colors. Fire-proof cable trays are generally gray similar to electric boxes, and FRP cable trays are turquoise (lighter weight), which is easy to distinguish.

Conclusion

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