What is the material of the fire tray?

It's different, and it's not the same for all kinds of things.

The difference between fire-resistant bridge and fireproof bridge is: different shell structure, different fire burning temperature, and different fire resistance time.

First, the shell structure is different.

1. Fire-resistant bridge: The shell and thermal insulation layer of the fire-resistant bridge are made of fireproof materials with high temperature resistance of 1100 and insulation materials with high temperature resistance of 300.

2. Fireproof bridge: The shell of the fireproof bridge is added with a fireproof partition, and some shells are coated with fireproof coatings.

Second, the fire combustion temperature is different.

1. Refractory bridge: The fire combustion temperature of the refractory bridge will only burn when the high temperature of 920 1050 is reached.

2. Fireproof bridge: The fire burning temperature of the fireproof bridge reaches about 800 degrees.

Third, the fire resistance time is different.

1. Refractory bridge: The refractory time of refractory bridge is 60 minutes, 90 minutes, 120 minutes and 180 minutes.

2. Fireproof bridge: The fireproof bridge has 30 minutes, 40 minutes, and 60 minutes.

In reality, there is no such thing as a fireproof bridge, only a fire-resistant bridge and a sprayed bridge.

In order to reduce the cost, the fire bridge was shouted, and the supervisor acquiesced. There is no word fireproof bridge in any standard, and the inspection agency will not write about fireproof bridge.

A fireproof bridge refers to a structure that is made of fireproof materials or has a fireproof coating on the surface; The fire-resistant bridge is only relatively burned, and will not collapse or disintegrate in a short period of high temperature; The performance of both is good, and the difference is only a matter of cost and price.

Fireproof bridge: It is mainly composed of fireproof board composite with glass fiber reinforced material and inorganic adhesive composite with metal skeleton and other fireproof substrates. Refractory bridge:

The side plates are drawn by forming machines, which increases the bending strength of the fire-resistant bridge; The side plate and bottom plate adopt advanced technology, and the surface is flat and smooth; The outer surface is sprayed with fireproof paint, which can effectively isolate the air and achieve the effect of heat insulation; The inner side pad is added with aluminum silicate rock wool and fireproof board to prevent the conduction of heat; The fire-resistant bridge is equipped with a dust cover, supported by special materials, when a fire occurs, the dust cover falls off and seals all the heat dissipation holes on the shield to achieve the fire prevention effect; The product meets the national fire protection standards.

The national standard for fireproof cable tray is: thickness within 300mm width, wall thickness of 1000mm-300mm 2mm, and more than 1000mm. International Standard for Thickness of Tray :

The width of the cable tray is less than or equal to 150, 150 is less than the width of the cable tray is less than or equal to 300, 300 is less than the width of the cable tray is less than or equal to 500, 500 is less than the width of the cable tray is less than or equal to 800, and the width of the cable tray is greater than 800. National standard for fireproof cable bridges: the thickness of fireproof paint is required to be greater than or equal to 1mm, and the fire-resistant time is greater than 30 minutes, which is the general fireproof paint effect, which also has the difference between cheap and expensive, and the expensive effect is better.

Fireproof cable trays can be divided into three types of fireproofing: external fireproof, internal fireproof, and fully fireproof.

1.The external fireproof type is to spray a layer of fireproof material on the surface of the cable tray, which can effectively prevent high temperature or flame from causing damage and damage to the cable tray, and is often suitable for fire-prone areas.

2.The internal fireproof type is the inside of the tray type or trough cable tray is sprayed with a layer of fireproof material, which can effectively prevent the internal cable from fire and limit the spread of internal flames.

3.This type of cable tray can play a comprehensive role in fire prevention, which can not only prevent external high temperature or flame, but also prevent internal cable fire. Excellent fire performance and high safety.

4.Fireproof cable tray is generally used for cable power below 10 thousand volts, and can be applied to control cables, lighting cables and indoor and outdoor overhead cable laying.

From the perspective of fire protection, the fireproof trunking refers to the composition of the fireproof trunking is a material with certain combustion properties, generally made of incombustible or non-combustible materials.

Fire-resistant trunking, according to GA479 2004 "Fire-resistant Cable Trunking Box", its most important performance is: the resistance of the groove box.

The fire performance should meet: Class I fire resistance maintenance working time 60min, Class II fire resistance maintenance working time 45min, iii

The working time of grade refractory maintenance is 30min.

The so-called fire trough is that the temperature does not exceed 200 degrees Celsius and will not cause a fire accident.

The refractory tank is made of refractory materials, which can admit that there will be no accidents at a temperature of 800 degrees.

The test criterion is to be able to recognize how high the temperature is.

Fireproof bridge: It is treated with a fireproof process on the surface of the ordinary bridge, so that the ordinary bridge has the effect of fireproof and flame retardant. The fireproof bridge has a very good fireproof and flame retardant effect, and at the same time has the performance characteristics of fireproof, oil-proof, anti-corrosion, non-toxic and non-polluting.

Ordinary bridge: Because the performance characteristics of ordinary bridge are not very good, it is generally used in a normal environment, and cannot be used in corrosive, humid, high temperature and other strong environments. Ordinary tray can only be used in a dry indoor environment, and the protection of cable lines is poor.

1. The main performance difference between fireproof bridge and ordinary bridge:

1. Fireproof bridge: The fireproof bridge is sprayed with a layer of fireproof coating on the surface of the ordinary bridge, which has the effect of fire prevention and flame retardant. In fact, in fact, the bridge itself will not catch fire, and the main risk of fire is the cable, so the fire retardant coating is the principle of flame retardant.

2. Ordinary bridge: ordinary bridge is our commonly used steel galvanized cable tray, the bridge in the building can be independently installed or attached to various buildings and early pipe corridor support, the installation should show the characteristics of simple structure, beautiful appearance, sensitive structure and convenient protection. All components are galvanized and installed in the open air outside the building.

Second, the requirements of the two are different:

1. Requirements for fireproof bridge: fireproof bridge requires fire-resistant time greater than 1h in the underground garage. For sections that require the bridge to be fireproof, fire-resistant or flame-retardant board and mesh materials can be added to the tray and ladder frame to form a closed or semi-closed structure, and the surface of the bridge can be coated with a fireproof coating that conforms to the CECS2490 "Technical Specification for the Application of Fireproof Coatings for Steel Structures".

2. Requirements for ordinary bridges: In engineering design, the layout of bridges should be comprehensively compared according to factors such as economic rationality, technical feasibility, and operation safety to determine the best plan, and fully meet the requirements of construction and installation, maintenance and cable laying.

Third, the structure of the two is different:

1. The structure of the fireproof bridge: the fireproof bridge, the surface has a frosted feeling, and is generally used in the distribution lines of fire-fighting equipment, including fire-fighting control rooms, fire-fighting pumps, fire-fighting elevators, smoke-proof fans and automatic fire alarm systems.

2. The structure of the ordinary tray: the cable tray is divided into trough type, tray waiting type, ladder type, grid type and other structures, which are composed of brackets, supporting arms and installation Lao Kai accessories.

The ordinary fireproof bridge is sprayed with a layer of fireproof paint on the surface of the surface of the ordinary bridge to play the role of fireproof and flame retardant. The bridge itself will not **, it can only be the cable that catches fire.

There are three types of fireproof bridges, fireproof trough type state draft bridge, fireproof ladder bridge, and fireproof tray bridge.

The airtight fireproof bridge is the so-called fireproof trough bridge in the industry, which is fully sealed at 360 degrees after the cover plate is attached. It is mainly anti-signal interference signal, and can better protect the cable in the slot from damage caused by external factors.

What kind of material does the fireproof tray belong to? What is the principle of fire prevention?

The only thing that could have caught fire was wires and cables. However, the principle of the fireproof and flame retardant effect of the fireproof coating is that the fireproof coating is heated to decompose non-combustible inert gas, weaken the flammable gas decomposed by the heat of the bridge, and make it not easy to burn up or slow down the incineration. Effectively prevent the spread of fire.

The nitrogen-containing fireproof coating is heated to decompose NO, NH3 and other groups, which are combined with organic free radicals to stop the chain reaction of the fire and reduce the temperature. The fireproof bridge groove body is easy to install, the structure is neat, the service life is long, and beautiful, the cables and wires are installed in the fireproof bridge bargaining rack, the environment is clean and tidy, and the maintenance is convenient.

The fireproof bridge is made of steel.

The appearance standard of the fireproof cable tray is based on the 5 parts of the "2013 fire-resistant cable trough box":

Appearance requirements: The surface of the fireproof groove box (bridge) should be neat and flat, and there should be no cracks and other traces of hammering, so that the trough is not beautiful and not up to standard. The welding surface should be smooth, and there should be no pores, slag inclusions, loose and other defects, which will make the wires and cables scratched during installation.

The protective layer of the fitting should be uniform, and there should be no defects such as peeling, peeling, bulging, missing or dripping. Signage should be clear and concise.

Fire Tray Thickness Standards:

The materials and structures used in the production of fireproof groove boxes (bridges) should meet the design requirements. If the metal plate is used, the minimum thickness of the plate should comply with the provisions of the "2017 Steel Cable Tray Engineering Technical Regulations".

The color of the fire tray can be selected, and there are:

Deep beige, sky blue, dazzling crystal rises to tease black and regret, banana yellow, star diamond red, pearl white, high-gloss gray, platinum gray, electric box gray, high-gloss green.

Flame retardant materials, flame retardant materials.

Hello, the following is a little sister to solve your doubts for you, I hope it can help you.

Kiss, fireproof bridge: fireproof bridge is suitable for the laying of power cables below 10kV, as well as indoor and outdoor overhead cable trenches and tunnels such as control cables and lighting wiring. Fire-resistant bridge: The fire-resistant bridge is made of a layer of fire-retardant paint on the surface of the cold galvanized bridge.

What is the difference between fireproof bridge and fireproof bridge?

Oh, I'll wait a minute.

Hello, the following is a little sister to solve your doubts for you, I hope it can help you.

Kiss, fireproof bridge: fireproof bridge is suitable for the laying of power cables below 10kV, as well as indoor and outdoor overhead cable trenches and tunnels such as control cables and lighting wiring. Fire-resistant bridge: The fire-resistant bridge is made of a layer of fire-retardant paint on the surface of the cold galvanized bridge.

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Whether there is a layer of calcium silicate inside the bridge.

There is a fireproof bridge for board products.