Long span cable tray is a type of cable tray with a larger support span than general cable trays, and due to its exquisite structural planning, it has characteristics such as large load-bearing capacity. Therefore, it is not only suitable for indoor and outdoor cable aerial laying in industrial and mining enterprises such as oil refining, chemical industry, textile, machinery, metallurgy, power, television, broadcasting, etc., but also can be used as underground works, such as subways Cable trenches and supports in cable tunnels for civil air defense engineering.

大跨距电缆桥架共包含大跨距的梯级、托盘、槽式、重载荷梯架、直角三通、多节三通、直角四通，以及相应类型的连接件，盖板和支柱。

The large-span cable tray includes large-span steps, trays, troughs, heavy-duty ladders, right angle tees, multi section tees, right angle crosses, as well as corresponding types of connectors, cover plates, and pillars.

大跨距电缆桥架备有盖板，需求配盖板时在订购时阐明，或按盖板类型订购。

Large span cable trays are equipped with cover plates, which should be specified when ordering or ordered according to the type of cover plate.

大跨距电缆桥架外表处理分塑料喷塑、镀锌，或烤漆等处理。在腐蚀性环境中，可选用通过塑料喷涂处理的桥架，在一般大气防腐环境中可选用镀锌处理的桥架。

The surface treatment of large-span cable trays can be divided into plastic spraying, galvanizing, or painting. In corrosive environments, cable trays treated with plastic spraying can be selected, and in general atmospheric anti-corrosion environments, galvanized cable trays can be selected.

1.能够防止金属护栏在高电磁场下的电磁感应带来的发热、高感应电压问题，不会对变电设备发生损坏，防止运转维护人员遭受电击。

1. It can prevent the heating and high induced voltage problems caused by electromagnetic induction of metal guardrails under high electromagnetic fields, and will not damage the substation equipment, preventing operation and maintenance personnel from being electrocuted.

2.耐候性好，在湿热状态下不发生氧化锈蚀，不褪色，不需刷油漆维护，不必日常护理，不怕雷击。

2. Good weather resistance, no oxidation and rust under humid and hot conditions, no fading, no need for painting maintenance, no need for daily care, and no fear of lightning strikes.

3.耐腐蚀，在10%的硫酸、20%的硝酸、、50%的醋酸长时间效果下不受影响。

3. Corrosion resistance, unaffected by long-term effects of 10% sulfuric acid, 20% nitric acid, and 50% acetic acid.

4.耐碰击易康复，遭到物体碰击后弹性大，能康复到原形状，拉伸、曲折强度为600pa以上，抗疲劳才能约为钢材的50倍。

4. It is resistant to impact and easy to recover. After being hit by an object, it has great elasticity and can recover to its original shape. The tensile and bending strength is above 600pa, and the fatigue resistance is about 50 times that of steel.

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This article is dedicated by Shandong Cable Bridge Friendship. For more relevant knowledge, please click on: http://www.sdhangfeng.com Sincere attitude. We will provide you with comprehensive services. We will gradually contribute more relevant knowledge to everyone. Stay tuned