Professional Cable Tray Manufacturer

Cable tray is a kind of cable protection product commonly used in real estate or industrial construction projects. the latest content of the national standard of cable tray includes the common specifications, material, thickness, safety load and surface protection of steel energy-saving and emission-reducing bridge. 
The bridge frame is commonly made of steel, aluminum alloy and stainless steel, and the common structure of the bridge frame includes non-hole tray commonly known as trough type, perforated tray type and ladder frame commonly known as ladder type. 
The following content comes from online collation. 
1. When laying the cable tray, the width of the bridge is greater than or equal to 400mm, and the angle steel of 40mm*40mm*4mm, Φ 12 wire suspender and supporting expansion bolts are selected to make the hanger. 
The interface of the cable tray should be flat, the seams should be tight and straight, the cover plate should be flat without warping angle, and the position of the outlet should be accurate. 
The matching connecting bolts of the cable tray bracket should be ordered according to the specific requirements. The surface treatment of the cable tray bracket mainly has two processes: painting and galvanizing, and the galvanizing process can be used in the heavy corrosion environment. 
When the total length of the trays and ladders of the cable tray is not more than 30 meters, at least 2 places are connected with the grounding protection conductor. 
When the total length of the cable tray is more than 30 meters, a connection point should be added every 20 meters to 30 meters, and the starting point and end point of the line should be reliably grounded. 
2. National Standard 2000 National Bridge Standard includes the calculation method of bridge structure strength and stability, uniformly distributed load and conductivity experiment. 
The 2013 national standard includes the number of ex-factory inspection samples and the determination array and the classification of unqualified type inspection. 
The national standard 2000 includes the types and varieties of bridges, the specifications of trays and ladders, and the selection of load grades, while the national standards of 2013 include common specifications and dimensions, plate thickness and rated uniformly distributed load grades of bridges. 
The 2013 national standard refers to the standards of energy saving and environmental protection, adds the relevant national standards of mesh / composite cable tray, adds VCR bimetallic coating to the surface treatment method, and increases the standard requirements for the manufacturing accuracy of the tray. 
2000 the national standard stipulates that the manufacture, engineering design and construction of the bridge shall not only implement this national standard, but also comply with the provisions of other existing national standards. 
3, bridge material cable tray pick-up name rules are usually: material + type + specification, such as: fire trough horizontal bend 200m100, spray trough horizontal tee 100k50, stainless steel ladder horizontal tee 300m100 and so on. 
For cable trays of the same specification and different materials, the price of galvanized cable tray is higher than that of aluminum alloy cable tray, and the price of FRP cable tray is cheaper than that of galvanized cable tray. 
4. According to the structure type, cable tray can be divided into slot type, tray type, ladder type, net format, assembly type and so on. 
Among them, the trough type is the non-hole tray, which is airtight and has no ventilation hole. 
Pallet type belongs to perforated pallet. 
The thickness of the cover plate of the cable tray can be the same as that of the main structure of the bridge, or one grade lower than that of the main structure of the bridge.