工程布线中，梯式与槽式是使用率非常高的两种电缆桥架类型。很多施工人员凭经验选型，结果散热不足、防护不够、施工不便，验收时才发现问题。

In engineering wiring, ladder and trunking are the two most commonly used types of cable trays. Many construction personnel select the type based on experience, resulting in insufficient heat dissipation, inadequate protection, and inconvenient construction. Problems are only discovered during acceptance inspection.

梯式桥架：散热优先，适合动力电缆。 结构像梯子，横档间隔排列，电缆架空敷设。空气可以从各个方向流过，散热效果在几种桥架中非常好。大直径动力电缆运行时发热量大，用梯式桥架能有效降低电缆温度，延长绝缘寿命。缺点是防护性差——没有侧板和底板，防尘、防潮、防鼠咬能力弱。室外或粉尘大的车间，电缆表面容易积灰。

Ladder-type cable tray: Prioritizes heat dissipation, suitable for power cables. Its structure resembles a ladder, with rungs arranged at intervals, allowing cables to be laid overhead. Air can flow through from all directions, making it the most effective in terms of heat dissipation among various cable trays. Large-diameter power cables generate significant heat during operation, and using a ladder-type cable tray can effectively reduce cable temperature and extend insulation life. However, its disadvantage is poor protection - lacking side and bottom plates, it has weak dustproof, moisture-proof, and rodent-proof capabilities. In outdoor areas or workshops with high dust levels, the cable surface is prone to dust accumulation.

槽式桥架：防护优先，适合控制电缆和弱电。 全封闭结构，底板和侧板把电缆包在里面。防尘、防潮、防电磁干扰，对计算机电缆、通信电缆、热电偶电缆这类对信号质量敏感的场景更友好。缺点是散热差，大功率电缆密集敷设时，槽内温度会明显升高。选槽式桥架时，电缆填充率要控制在40%以下，留出散热空间。

Slot-type cable tray: Prioritizes protection and is suitable for control cables and low-voltage cables. It features a fully enclosed structure with bottom and side panels that enclose the cables. It is dustproof, moisture-proof, and resistant to electromagnetic interference, making it more suitable for scenarios where signal quality is sensitive, such as computer cables, communication cables, and thermocouple cables. The disadvantage is poor heat dissipation. When high-power cables are densely laid, the temperature inside the slot can significantly increase. When selecting slot-type cable trays, the cable fill rate should be controlled below 40% to leave space for heat dissipation.

托盘式：介于两者之间。 底部有孔或网格式设计，兼顾一定散热和防护，是石油、化工、电力、轻工等领域的通用选择。济南航丰的产品线中，托盘式也是常见配置。

Tray type: falling between the two. With holes or grid design on the bottom, it balances certain heat dissipation and protection, making it a common choice in the fields of petroleum, chemical, electric power, and light industry. In Jinan Hangfeng's product line, the tray type is also a common configuration.

山东工程的防腐选择有讲究。 山东靠海地区（青岛、烟台、威海）空气盐雾含量高，普通电镀锌桥架一两年就开始生锈，需要用热镀锌或喷塑处理。热镀锌锌层厚度要达到65μm以上，才能扛住海边环境。内陆干燥车间和地下车库，电镀锌桥架够用。化工园区或有酸碱腐蚀的场所，玻璃钢桥架或铝合金桥架比钢制更合适。

The selection of anticorrosion measures for projects in Shandong is quite particular. The coastal areas of Shandong (Qingdao, Yantai, Weihai) have high salt spray content in the air, and ordinary electroplated galvanized trays begin to rust after one or two years, necessitating hot-dip galvanizing or powder coating treatment. The thickness of the hot-dip galvanized zinc coating must reach over 65μm to withstand the seaside environment. For inland dry workshops and underground garages, electroplated galvanized trays are sufficient. For chemical parks or places with acid-base corrosion, fiberglass trays or aluminum alloy trays are more suitable than steel ones.

国标对板厚有硬杠杠。 宽度≤150mm的桥架板厚不低于1.0mm，150-300mm不低于1.2mm，300-500mm不低于1.5mm，500-800mm不低于2.0mm。这个数字不是建议，是验收时的硬指标。采购时卡尺量一下，比看样品册管用。

The national standard sets strict thresholds for plate thickness. For tray widths of ≤150mm, the plate thickness should not be less than 1.0mm; for widths between 150-300mm, the thickness should not be less than 1.2mm; for widths between 300-500mm, the thickness should not be less than 1.5mm; and for widths between 500-800mm, the thickness should not be less than 2.0mm. These figures are not recommendations, but rather hard indicators for acceptance. When purchasing, it is more effective to measure with a caliper than to rely on sample catalogs.

山东电缆桥架选型的逻辑很清晰：动力电缆走梯式，控制电缆走槽式，通用场景选托盘式；海边用热镀锌，干燥环境用电镀锌，腐蚀场所换材质；板厚按国标卡死，不留余地。

The logic for selecting cable trays in Shandong is clear: power cables use ladder-type trays, control cables use trough-type trays, and general-purpose scenarios choose tray-type trays; hot-dip galvanizing is used for seaside applications, electro-galvanizing for dry environments, and material substitution for corrosive locations; the thickness of the board is strictly adhered to according to national standards, leaving no room for deviation.

本文由山东电缆桥架友情奉献.更多有关的知识请点击:http://www.sdhangfeng.com 我们将会对您提出的疑问进行详细的解答，欢迎您登录网站留言。

This article is kindly contributed by Shandong Cable Tray. For more relevant knowledge, please visit: http://www.sdhangfeng.com. We will provide detailed answers to your questions. You are welcome to log in and leave a message on our website.