Cable tray is a general name of rigid structure with tight support cable, which is composed of tray type, trough type, step type straight section, tee, cross, bend and hanger.

现在市面上电缆桥架有很多，不同制作材料、不同类型的电缆桥架相差较大，那么我们在选购时要注意些什么呢？

There are a lot of cable trays on the market now. The prices of different materials and types of cable trays vary greatly. So what should we pay attention to when we buy them?

选购时要根据施工的工程环境和技术的要求，合理的选择电缆桥架的结构特征；电缆桥架按照材料划分主要有玻璃钢、钢制和铝合金几种，玻璃钢电缆桥架质量轻，耐腐蚀性好，不易燃，适合化工厂，但是其是钢制电缆桥架的3倍，在选择时要根据具体用途，选择不同材质的电缆桥架。

When purchasing, first of all, according to the engineering environment and technical requirements of the construction, the structural characteristics of the cable tray should be reasonably selected; according to the material, the cable tray is mainly divided into FRP, steel and aluminum alloy. The FRP cable tray is light in weight, good in corrosion resistance, nonflammable and suitable for the factory, but its price is three times that of the steel cable tray, so the selection should be based on the specific use , select cable tray of different materials.

电缆桥架的表面防腐层类别主要有浸锌、粉末静电喷涂、镀锌镍、冷镀锌等方式，热浸锌工艺生产的电缆桥架使用寿命不小于40年，适用于室外重腐蚀环境，造价高；粉末静电喷涂工艺寿命不小于12年，适用于室内常温干燥环境，一般；镀锌镍工艺寿命不小于30年，也适用于室外重腐蚀环境，造价高。

The types of surface anti-corrosion coating of cable tray mainly include zinc dipping, powder electrostatic spraying, galvanized nickel, cold galvanizing, etc. the service life of cable tray produced by hot-dip galvanizing process is not less than 40 years, which is suitable for outdoor heavily corrosive environment with high cost; the service life of powder electrostatic spraying process is not less than 12 years, which is suitable for indoor normal temperature and dry environment with general price; the service life of galvanized nickel process is not less than 30 years It is also suitable for outdoor heavy corrosive environment with high cost.