Cable trays are divided into slot type, tray type, ladder type, grid type, and other structures, which are composed of brackets, brackets, and installation accessories. It can be erected independently or attached to various buildings (structures) and pipe rack supports, reflecting the characteristics of simple structure, beautiful appearance, flexible configuration, and convenient maintenance. All parts need to be galvanized and installed on an outdoor bridge outside the building. If it is near the seaside or belongs to a corrosive area, the material must have physical properties such as corrosion resistance, moisture resistance, good adhesion, and high impact strength.

镀锌线槽：

Galvanized trunking:

镀锌线槽分为：绝缘配线槽、拨开式配线槽、迷你配线槽、分隔式配线槽、室内装饰配线槽、一体式绝缘配线槽、电话配线槽、日式电话配线槽、明线配线槽、圆形配线管、展览用隔板配线槽、圆形地板配线槽、软式圆形地板配线槽、盖式配线槽等。根据材料的不同，线槽分为PVC线槽、无卤PPO线槽、无卤PC/ABS线槽、钢铝等金属线槽等。

Galvanized wiring duct is divided into: insulated wiring duct, split type wiring duct, mini wiring duct, separated type wiring duct, indoor decoration wiring duct, integrated insulated wiring duct, telephone wiring duct, Japanese telephone wiring duct, open wire wiring duct, circular wiring duct, exhibition partition wiring duct, circular floor wiring duct, flexible circular floor wiring duct, cover type wiring duct, etc. According to different materials, trunking is divided into environmentally friendly PVC trunking, halogen-free PPO trunking, halogen-free PC/ABS trunking, steel aluminum and other metal trunking.

电缆桥架与线槽线槽的区别：

The difference between cable tray and trunking:

尺寸规格各不相同：桥架相对较大(200×100-1200×200)，线槽相对较小。如果电缆和电线较多，建议使用桥架。

Different sizes and specifications: the bridge is relatively large (200 × 100-1200 × 200), the trunking is relatively small. If there are many cables and wires, it is recommended to use a bridge.

材料厚度不同：根据JGJ16-2008-5.1金属线槽又称槽式桥架，一般由0.4-1.5mm厚的整块钢板弯曲而成的槽型部件，概念上与桥架的区别在于高、宽比不同，盘架浅而宽，金属线槽具有一定的深度和封闭性。但是桥架比线槽更结实，更多的是用来放电缆的，当然也可以放电线，通常用于强电系统。

Different material thicknesses: According to JGJ16-2008-5.1, metal trunking is also known as a trough type cable tray. It is generally a trough type component formed by bending a whole piece of steel plate with a thickness of 0.4-1.5mm. The conceptual difference from the cable tray is that the height to width ratio is different, the tray frame is shallow and wide, and the metal trunking has a certain depth and closure. However, the bridge is more robust than the trunking, and it is more used for placing cables. Of course, it can also be used for placing wires, usually used in strong current systems.

填充率不同:根据JGJ16-20088.5.3，线槽内电线电缆的总截面不得超过线槽内截面的20%，载流导体不得超过30根，而桥梁是电缆的总截面不得超过截面的40%。因为安装高度不同，所以安装高度较低必须有盖板，有盖板散热不好，填充率较小。

Different filling rates: According to JGJ16-20088.5.3, the total cross-section of wires and cables in the trunking should not exceed 20% of the cross-section in the trunking, and the current carrying conductors should not exceed 30. The total cross-section of bridges and cables should not exceed 40% of the cross-section. Due to the different installation heights, it is necessary to have a cover plate when the installation height is low. With a cover plate, heat dissipation is not good, and the filling rate is small.

密封性能不同:金属线槽密封良好，无需支架支撑，可敷设在电缆沟和建筑夹层中。槽桥还有一些是半开放式的，必须有支架作为支撑，一般在室内或室外沿空架设。

Different sealing properties: The metal trunking is well sealed and does not require support. It can be laid in cable trenches and building interlayer. Some slot bridges are semi open and must be supported by brackets, usually erected indoors or outdoors along the air.

不同强度:桥梁主要用于敷设电力电缆和控制电缆，线槽强度低，通常用于敷设电线和通信电线电缆，如网络电话。

Different intensities: Bridges are mainly used for laying power and control cables, with low trunking strength, and are typically used for laying electric and communication wires and cables, such as network telephones.

转弯半径不同:桥梁转弯半径比较大，线槽大部分转弯直角。

Different turning radii: The turning radius of bridges is relatively large, and most of the trunking turns at right angles.

跨度不同:桥梁跨度大，线槽小。所以固定支架差别很大，支吊架数量差别很大。

Different spans: large bridge spans, small trunking. Therefore, the fixed supports vary greatly, and the number of supports and hangers varies greatly.

支吊架间距不同：根据JGJ16-2008，线槽不大于2m，桥架不大于1.5~3m。

The spacing between supports and hangers is different: according to JGJ16-2008, the trunking is not greater than 2m, and the bridge is not greater than 1.5~3m.

安装方式不同:桥梁有特殊规范(详见CECS31.91)，线槽无特殊规范固定。

Different installation methods: bridges have special specifications (see CECS31.91 for details), and trunking is not fixed with special specifications.

盖板问题:《钢缆桥架工程设计规范》定义为桥架统称，盖板为附件。提到桥架安装高度达不到要求时，应加盖板保护。也就是说，桥架这个词的定义不包括盖板

Cover plate problem: The "Code for Design of Steel Cable Bridge Engineering" defines the bridge as a general term, and the cover plate is an accessory. When it is mentioned that the installation height of the bridge cannot meet the requirements, a cover plate should be added for protection. In other words, the definition of the term bridge does not include the cover plate

有了山东电缆桥架上面的小总结，希望对广大客户有所帮助，如果有什么不理解的或者寻求帮助的请点击我们的网站：http://www.sdhangfeng.com或者来电咨询，我们会尽全力为您解决

With the summary above for Shandong cable bridge, I hope it can be helpful to our customers. If you have any questions or need help, please click on our website: http://www.sdhangfeng.com Or call for consultation, and we will do our best to solve it for you