The materials of cable tray include galvanized sheet, stainless steel and aluminum alloy, etc. The fireproof cable tray can be made by spraying fireproof plastic powder on the basis of galvanized cable tray. The thickness standard of the bridge determines the thickness of each component of the bridge and the thickness of the protective layer on the surface of the bridge. Jinan bridge manufacturer will explain more details to you:
1. Fireproof cable tray
The fireproof cable bridge is to ensure that the cable can work normally for a period of time after the fire. When laying the fireproof cable tray, the tray ladder is suitable for laying under the flammable and explosive gas pipeline and heating pipeline. When laying the fireproof cable tray, the tray ladder is suitable to be laid above the water pipe to prevent water from entering after the water pipe leaks.
The connection of two sections of fireproof cable tray or the movable connecting plate shall be connected at both ends with yellow-green wire or copper braided wire, and the cross-sectional area of the connecting wire shall not be less than 16mm2. The fireproof cable tray shall be connected with the nearby total equipotential grounding device when entering and leaving the building.
2. Galvanized sheet
Galvanized plate is one of the bridge plates, and other materials include aluminum alloy, glass fiber reinforced plastics, composite materials, etc. The zinc layer on the surface of the galvanized sheet can prevent the bridge from rusting and can be applied to the production of cable bridge in various environments.
3. Galvanizing process
Good electroplating solution, proper electroplating parameters, control parameter equipment and skilled personnel are required for the electroplating process, otherwise it is difficult to obtain the zinc coating meeting the quality requirements. Hot-dip galvanizing can make the whole steel substrate surface protected by zinc layer, and the molten zinc can be easily and evenly covered on the inside of the pipe fittings at the depression or other corners that are difficult to physically enter.
4. Bridge thickness
According to the 2013 bridge standard, the width of the tray and ladder is greater than 800mm. If it is made of steel, the thickness of the tray should be 2.2mm. If it is made of aluminum alloy, the thickness of the tray should be at least 2.5mm. If it is made of glass fiber reinforced plastic, the thickness of the tray should be 5.0mm. In the bridge standard, the thickness of the surface coating of the plastic spraying process is required to be>=50um, the thickness of the zinc layer on the galvanized surface is required to be>=12um, and the thickness of the zinc layer on the hot-dip galvanized surface is required to be>=65um. VCI bimetallic coating thickness requirement>=60um.
The above is the contents of galvanized sheet fireproof cable tray and relevant thickness standards compiled by the small editor. If you have any questions about relevant knowledge, you can pay attention to our website Leave a message or call directly.