What are the key points of "selection" to know before purchasing cable tray? Let's talk about it.
Material selection of cable tray: it is generally divided into iron, FRP, aluminum alloy and stainless steel materials. Different materials are selected according to different construction requirements.
Selection of anti-corrosion coating on the surface of cable tray: the anti-corrosion coating refers to the surface coating, generally refers to its thickness, which is usually used to distinguish hot-dip galvanized and galvanized sheet.
Selection of fire rating of cable tray: at present, there is a standard fire rating in China, and suppliers are allowed to show relevant documents.
Specification and size selection of cable tray: different construction routes of cable tray lead to different specifications and sizes. Bridge size is an important part of bridge selection. Generally, after the purchaser determines the specific specification and quantity, the supplier can provide the corresponding quotation.
Selection of filling rate of cable tray: the width and height of cable ladder and tray shall meet the requirements of filling rate. Generally, the filling rate in cable ladder and tray can be 40% ~ 50% for power cable and 50% ~ 70% for control cable, and 10% ~ 25% engineering development allowance should be reserved.
Selection of load grade of cable tray: when selecting the load grade of cable tray, the working uniform load of cable tray shall not be greater than the rated uniform load of the selected load grade of cable tray. If the actual span of supports and hangers of cable tray is not equal to 2m, the working uniform load shall meet the requirements. Under the condition of meeting the corresponding load, the specifications and dimensions of various components, supports and hangers shall match the straight-line section and bend series of trays and ladders.
Manufacturer selection of Jinan cable tray: before purchasing a large number of products, we must pay attention to the cable tray factory. Many people know almost nothing about related things when they do it, which will directly affect the final purchase quality. Manufacturers will have a great impact on us. Especially in the wholesale of cable bridge factory, we should know more about the manufacturer in order to truly ensure the quality.
To understand the bridge factory, there must be a lot of facts as a basis. When many people understand these things, they are completely divorced from the objective reality, which is very disadvantageous for us to understand the manufacturers and products. Only by paying more attention to all aspects can we have more opportunities to choose products.
In the process of purchasing cable tray, it is very important for all purchasers to understand the cable tray factory well, so as to truly ensure that there will be no accidents in future procurement. Some people do not pay attention to each other when doing things, which directly affects the later purchase results.
We should also know that the prices of cable trays of different models and materials vary greatly, and the confusion of structural form will bring heat dissipation and mechanical protection problems to the construction site. Therefore, in the design stage, designers should be required to reasonably select the structural characteristics of cable tray according to the environmental characteristics and technical requirements of the project, and clearly express them in the model identification and material list of the scheme.
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