There are many kinds of aluminum alloy cable trays, such as stainless steel, aluminum alloy, ladder, net, etc. They consist of brackets, brackets and mounting accessories. It is considered that the bridge can be used alone or connected with various engineering buildings (structures) and water pipe supports. It has the characteristics of simple structure, beautiful design, flexible equipment and convenient maintenance.

1.在工程設計中，橋梁應根據經濟合理性、技術應用可行性、運行穩定性等因素綜合考慮，然后明確方案，這也需要滿足安裝、維護和電纜敷設的要求。

1. In the engineering design, the bridge shall be comprehensively considered according to the economic rationality, technical application feasibility, operation stability and other factors, and then the scheme shall be defined, which also needs to meet the requirements of installation, maintenance and cable laying.
 

2.水平敷設的橋架距路面的高度一般不小于2.5米，距路面1.8米以下的垂直橋架應覆蓋防護金屬罩，專用于電氣設備的房間除外。鋁合金電纜橋架敷設在設備夾層或道路內應小于2.5m，并應采取接地保護措施。

2. The height of the horizontally laid bridge from the road surface is generally not less than 2.5m, and the vertical bridge less than 1.8m from the road surface shall be covered with protective metal cover, except for the room dedicated to electrical equipment. The aluminum alloy cable tray shall be less than 2.5m laid in the equipment interlayer or road, and grounding protection measures shall be taken.

3.橋架、線槽及其支吊架在腐蝕性刺激性區域的環境中使用時。應采用防腐處理，防腐處理應滿足項目區域的環境和耐久性要求。適用于耐腐蝕規定或潔凈場所，應選用鋁合金電纜橋架。

3. When the bridge, trunking and its supports and hangers are used in the environment of corrosive and irritating areas. Anti corrosion treatment shall be adopted, which shall meet the environmental and durability requirements of the project area. Aluminum alloy cable tray shall be selected for corrosion resistance regulations or clean places.

4.在防火規定范圍內，電纜梯架、橋架應增加具有耐火或阻燃功能的板、網等材料，形成封閉或半封閉結構，并采取橋架、支架表面噴涂防火涂料等對策。整體耐火功能應滿足相關法律、法規、規范或標準的要求。鋁合金電纜橋架不應用于耐火要求高的場所。

4. Within the specified scope of fire prevention, the cable ladder and bridge shall be added with plates, nets and other materials with fire-resistant or flame-retardant function to form a closed or semi closed structure, and the countermeasures such as spraying fire-retardant coating on the surface of bridge and support shall be taken. The overall fire resistance function shall meet the requirements of relevant laws, regulations, specifications or standards. Aluminum alloy cable tray shall not be used in places with high fire resistance requirements.

5.對于需要屏蔽電纜線路的電磁干擾或室外陽光、油、腐蝕性刺激性液體和易燃粉塵等外部保護功能的區域環境的規定，不得使用孔鋁合金電纜橋架。

5. Perforated aluminum alloy cable trays shall not be used in areas requiring shielding electromagnetic interference of cable lines or external protection functions such as outdoor sunlight, oil, corrosive irritant liquid and flammable dust.

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