Professional Cable Tray Manufacturer

Shandong Hongfeng Electric Group Co., Ltd.

The products can be widely used in construction, energy, power, plant.

Calculation formula of cable tray, corresponding protection technology and thickness standard of steel bridge.

Release time:

2023-12-06

There are many calculation formulas and corresponding protection techniques for steel cable tray

There are many calculation formulas and corresponding protection techniques for steel cable tray, and there are many contents of the bridge thickness standard, including the bridge protection layer thickness standard.
More knowledge points are as follows, from the network arrangement.
1. When the welding technology is used in the steel cable tray, there are certain requirements for the surface quality of the welded parts, such as uniform weld surface, no cracks, missed welding, burning through, slag entrapment and other defects.
For the steel cable tray of the same specification and different structure, the price of the trough steel cable tray is more expensive than that of the cascade steel cable tray, and the price of the tray steel cable tray is higher than that of the trough steel cable tray.
In general, the prices of cable bridge manufacturers are like this.
2. Bridge material bridge material should be able to withstand the impact of GB/T2423.55-2006 with a collision capacity of 10J, and there should be no deformation and cracks that affect the safe use after impact.
The appearance of bridge material needs to adopt the combination of visual inspection and hand touch inspection.
The thickness of zinc layer on the surface of electroplated galvanized bridge should be greater than or equal to 12um, the metal matrix should not be exposed, the surface of bridge should be smooth and uniform, and there should be no defects such as peeling, air bubbles, flower spots, local scars and so on.
3. The common surface anticorrosion technologies of cable tray include pre-coated colored steel, VCI bimetallic coating, hot-dip galvanizing, powder spraying and electrogalvanizing. The latter two kinds of protection are suitable for ordinary and moderately corrosive cable tray in indoor and outdoor environment.
The following hazards should be avoided during the installation of cable tray: mechanical damage, mechanical vibration, corrosive liquid, ultraviolet radiation, thermal radiation, etc.
The overall protection grade of the cable tray shall comply with the IP30 grade in GB4208-2008.
4. The terms in the national standard 2000 include ladders, perforated pallets, non-perforated pallets, through, bends, cover plates, fasteners, clapboards and other standard terms.
The 2000 national standard also defines the standard names of various connecting pieces.
In the 2000 national standard, the name of the structural feature of long-span tray type bridge is bilateral perforated tray, code name is DP.
In the 2000 national standard, the name of the structural feature of long-span ladder bridge is bilateral ladder frame, and the code is DT.
5. When the width of the ordinary ladder frame in the thickness standard is greater than 150mm and less than or equal to 300mm, the thickness of the side plate should be at least 1.2mm, the thickness of the rung should not be less than 1.2mm, and the thickness of the cover plate should not be lower than that of 1.0mm.
When the width of the corrugated bottom tray in the bridge tray standard is less than 300mm, the thickness of the side plate should be at least 1.0mm, the thickness of the corrugated bottom plate should be 0.7mm, and the cover plate should not be less than 0.6mm.

Keywords：

What are the common widths of steel cable tray?

What are the requirements of the cable tray manufacturer?

What are the common widths of steel cable tray?

What are the requirements of the cable tray manufacturer?