应用自然环境不一样，必须挑选的桥架规格、型号规格都不一样，这也就牵涉到电缆桥架的购买难题。一般，挑选和选购电缆桥架，只必须留意下列4个关键点。

The natural environment is different, and the cable tray specifications, models and specifications that must be selected are different, which also involves the purchase of cable tray. Generally, the following four key points must be paid attention to when selecting and purchasing cable trays.

1、挑选适合的结构特征

1. Select appropriate structural features

济南电缆桥架的种类关键和构造相关，不一样构造的电缆桥架运用在不一样的自然环境中。因而，先要依据实际的工程施工自然环境和所希望的电缆桥架的作用来挑选好的电缆桥架。

The type of cable tray in Jinan is related to its structure. Cable trays with different structures are used in different natural environments. Therefore, it is necessary to select a good cable tray according to the actual natural environment of the project construction and the desired role of the cable tray.

2、依据材料挑选电缆桥架

2. Select cable tray according to material

电缆桥架有钢质、玻璃钢防腐和铝合金型材等几类种类，不一样原材料制成的电缆桥架在特性上各有不同。例如玻璃钢桥架重量较轻；铝合金桥架净重也轻，但价钱偏贵。

Cable trays include steel, glass fiber reinforced plastic anti-corrosion and aluminum alloy profiles. Cable trays made of different raw materials have different characteristics. For example, the weight of FRP Bridge is light; The net weight of aluminum alloy bridge is also light, but the price is too expensive.

3、依据阻燃等级挑选电缆桥架

3. Cable tray shall be selected according to flame retardant grade

如果是对防火安全有较高规定的自然环境，不宜应用铝合金桥架，而应当挑选阻燃性型电缆桥架，那样能够确保电缆桥架的使用寿命更长。

If it is a natural environment with high regulations on fire safety, aluminum alloy cable tray should not be used, but flame retardant cable tray should be selected, which can ensure a longer service life of cable tray.

4、挑选电缆桥架规格

4. Select cable tray specification

济南电缆桥架不可以稍大或偏小，一定要挑选适合的规格。整体的标准是，电缆线总截面与拖盘内横断总面积的比率，电缆电缆不可超过40%；变频电缆不可超过50%。

Jinan cable tray can not be slightly larger or smaller, we must select the appropriate specifications. The overall standard is that the ratio of the total cross-section of the cable to the total cross-sectional area in the tray shall not exceed 40%; The frequency conversion cable shall not exceed 50%.

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