橋架主要由玻璃纖維增強材料和無機膠粘劑復合而成的防火板、金屬架和其他防火基材組成。外層涂有防火涂料，這樣防火橋架在暴露在火中時不會燃燒，從而阻止火勢蔓延。
The bridge is mainly composed of fireproof board, metal frame and other fireproof base materials composed of glass fiber reinforced material and inorganic adhesive. The outer layer is coated with fireproof coating, so that the fireproof bridge will not burn when exposed to the fire, thus preventing the spread of the fire.
它具有很好的防火阻燃效果，同時具有防火、耐油、耐腐蝕、、無污染、整體安裝方便、結構合理、使用壽命長、外形美觀的特點。電纜安裝在電纜橋架上，環境干凈，清洗方便。防火涂料具有涂層薄、耐火性高、附著力強的特點。
At the same time, it has the characteristics of fire prevention, oil resistance, corrosion resistance, non-toxic, no pollution, convenient installation, reasonable structure, long service life and beautiful appearance. The cable is installed on the cable tray, and the environment is clean and easy to clean. Fire retardant coating has the characteristics of thin coating, high fire resistance and strong adhesion.

濟南電纜橋架
Jinan cable bridge
電纜橋架，表面磨砂，一般用于消防設備的所有配電線路，包括消防控制室、消防水泵、消防電梯、排煙風機和火災自動報警系統。除火災自動報警系統外，其他配電線路可采用不含防火橋架的耐火電纜。防火橋架在地下車庫的耐火時間要求在1小時以上。對于需要橋架防火的部分，可在托盤和梯子框架上增加防火或阻燃的板、網材料構成封閉或半封閉式結構。
Cable tray, surface frosted, generally used for all distribution lines of fire fighting equipment, including fire control room, fire pump, fire elevator, smoke exhaust fan and automatic fire alarm system. In addition to the automatic fire alarm system, other distribution lines can use fire-resistant cables without fire-proof bridge. The fire resistance time of fireproof bridge in underground garage should be more than 1 hour. For the parts that need to be fireproof, fireproof or flame-retardant plates and nets can be added on the tray and ladder frame to form a closed or semi closed structure.
電纜橋架在日常生活中并不常見，它對防火橋架的膨脹和收縮感到好奇嗎?讓小編告訴你防火橋架的膨脹和收縮。
Cable tray is not common in daily life. Is it curious about the expansion and contraction of fire-proof bridge? Let Xiaobian tell you about the expansion and contraction of fire-proof bridge.
由于環境溫度的變化，鋼電纜橋架會因熱而膨脹，因冷而收縮。室外橋架受溫度影響較大，如環境很高溫度為40，很低溫度為-20，則電纜橋架的收縮量可由下式求得：Δt=11.2×10-6×60deg(度)×1000mm。
Due to the change of ambient temperature, steel cable tray will expand due to heat and shrink due to cold. The outdoor cable tray is greatly affected by temperature. If the environment is very high, the temperature is 40, and the very low temperature is - 20, then the shrinkage of cable tray can be obtained from the following formula: Δ t = 11.2 × 10-6 × 60Deg (degree) × 1000mm.
由此得出結論：溫差為60℃時,Δι=0.672mm/m溫差為50℃時,Δι=0.560mm/m溫差為40℃時,Δι=0.448mm/m，工程設計中直線段電纜橋架應考慮伸縮接頭,伸縮接頭的間距建議按以下取定：當溫差為40℃時為50m;當溫差為50℃時為40m;當溫差為60℃時為40m。
It is concluded that: when the temperature difference is 60 ℃, Δ ι = 0.672mm/m, when the temperature difference is 50 ℃, Δι = 0.560mm/m, when the temperature difference is 40 ℃, Δι = 0.448mm/m, the expansion joint should be considered in the engineering design of cable tray, and the spacing of expansion joint is recommended to be determined as follows: 50m when the temperature difference is 40 ℃, 40m when the temperature difference is 50 ℃, and 40m when the temperature difference is 60 ℃.