The surface anti-corrosion coating of cable tray mainly includes hot-dip galvanizing, galvanized nickel, cold galvanizing, powder electrostatic spraying, etc. Below, the manufacturer of the cable tray will introduce how to select the surface anti-corrosion coating for the cable tray.

資料顯示：熱浸鋅工藝壽命不小于40年，適用于室外重腐蝕環(huán)境，造價高；鍍鋅鎳工藝壽命不小于30年，也適用于室外重腐蝕環(huán)境，造價高；冷鍍鋅工藝壽命不小于12年，適用于室外輕腐蝕環(huán)境，造價一般；粉末靜電噴涂工藝壽命不小于12年，適用于室內(nèi)常溫干燥環(huán)境，一般。

The data shows that the service life of hot-dip galvanizing process is not less than 40 years, which is suitable for outdoor heavy corrosive environment with high cost; The service life of galvanized nickel process shall not be less than 30 years, and it is also suitable for outdoor heavy corrosive environment, with high cost; The service life of cold galvanizing process shall not be less than 12 years. It is suitable for outdoor light corrosive environment and the cost is general; The service life of powder electrostatic spraying process shall not be less than 12 years. It is suitable for indoor normal temperature and dry environment. The price is average.

設計人員應該根據(jù)工程環(huán)境條件合理選擇電纜橋架的表面防腐層類別，并在設計文件中清晰地表達。

The designer shall reasonably select the type of anti-corrosion coating on the surface of the cable tray according to the environmental conditions of the project, and clearly express it in the design documents.

電纜橋架在有防火要求的區(qū)段內(nèi)，可在電纜梯架、托盤內(nèi)添加具有耐火或難燃性能的板、網(wǎng)等材料構成封閉或半封閉式結(jié)構，并采取在橋架及其支吊架表面涂刷防火涂層等措施，其整體耐火性能應滿足有關規(guī)范或標準的要求。在工程防火要求較高的場所，不宜采用鋁合金電纜橋架。

In the sections with fire protection requirements for cable trays, plates, nets and other materials with fire-resistant or flame-retardant properties can be added to the cable ladders and trays to form a closed or semi closed structure, and measures such as painting a fire-resistant coating on the surface of the cable trays and their supports and hangers shall be taken. The overall fire resistance performance shall meet the requirements of relevant national codes or standards. Aluminum alloy cable trays should not be used in places with high fire protection requirements.

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