Professional Cable Tray Manufacturer

Aluminum alloy is one of the common materials of cable tray, other similar materials such as steel, the standard requirements of cable tray include what are the common specifications of the bridge, what is the common height of the bridge, the higher the height of the bridge, the greater the safety load that the bridge can bear. 
The following is the relevant knowledge for your reference. 
1. Cable tray bends are mainly divided into three types: horizontal bends, vertical bends and diverted bends. 
Horizontal bends include: horizontal 90-degree bend, horizontal 135-degree bend, horizontal tee, horizontal four-way, horizontal differential bending, diameter-changing joint, horn mouth and so on. 
According to the specification, the standard length of cable tray can be divided into 2m, 3m, 4m and 6m. 
The standard length of cable tray with pallet structure is generally 2m one section. 
The standard length of cable tray with grid structure is generally 3m section. 
2. For the surface anodizing treatment of aluminum alloy bridge tray, the minimum average film thickness should be 10um, and the minimum local film thickness should be 8um. 
The thickness of chemical anticorrosive powder sprayed on the surface of aluminum alloy cable tray should be greater than or equal to 80um. 
The flexibility of aluminum alloy cable tray refers to the GB/T1731 standard of lacquer film flexibility test, and the impact strength of aluminum alloy cable tray is in accordance with the GB/T1732 standard of paint film impact test method. 
3. In the national standard 2017, when the width of cable tray is 300mm, 350mm, 400mm, 450mm, the bending radius of the bridge should be 150mm. 
In the 2000 national standard, the name of the structural feature of tray bridge is perforated tray, code-named P. 
The name of the structural feature of ladder bridge in the 2000 national bridge frame standard is ladder frame and the code is T. 
4. Bridge specification 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. 
When compiling the column lifting list of cable tray, it should be filled in: name + model + column length + classification. 
Such as "hot-dip galvanized channel steel column, specification JY-H103-1000 (type I)", "hot-dip galvanized angle steel column, specification JY-H104-800( type II)". 
5. The height of the bridge is above 2.2m, which is suitable for laying cable tray. 0.3m is the minimum distance between the top of the bridge and the ceiling or other obstacles. 
50% is the minimum ratio of the cross-sectional area of the cable to the cross-sectional area of the tray. 
The weight determinants of cable tray include the width, height, thickness and density of cable tray. The wider the width, the greater the weight. For example, 200*50mm is heavier than 100: 50 bridge, and the higher the height, the heavier the weight. For example, 100*100mm is heavier than 100*50mm bridge, the thicker the weight is, for example, 200*100*1.2mm is heavier than 200*100*1.0mm bridge, and the steel bridge is heavier than aluminum bridge. 
6. bridge load cable tray horizontal installation should pay attention to avoid the surrounding buildings, to avoid the surrounding gas and liquid corrosion and solid physical damage, but also to ensure that the safety load is sufficient to avoid related accidents, there are also requirements and specifications in the bridge standards. 
For the cable tray with high load whose span is larger than the standard length or considering the effect of outdoor wind and snow, it is necessary to use enhanced side plates or enhance the height of the bridge, or corrugated cable tray to ensure its safe load.