Fire resistant cable tray

由電纜橋架的直線段、彎通、附件和支吊架等組成，用以支撐電纜具有連續(xù)的剛性結(jié)構(gòu)系統(tǒng)，該系統(tǒng)維持工作時能達到規(guī)定的耐火要求（有些場合可簡稱耐火槽盒）。

It is composed of straight sections, bends, accessories, supports and hangers of the cable tray to support the cable. It has a continuous rigid structure system. The system can meet the specified fire resistance requirements when it is maintained in operation (in some cases, it can be referred to as fire-resistant trough box for short).

耐火電纜橋架按結(jié)構(gòu)型式劃分可分為：

Fire resistant cable tray can be divided into:

a.復合耐火型電纜橋架

a. Composite fire-resistant cable tray

外層為鋼制鍍鋅后涂覆鋼結(jié)構(gòu)防火涂料，內(nèi)層為非金屬防火層。

The outer layer is steel, galvanized and coated with steel structure fire retardant coating, and the inner layer is non-metallic fire retardant layer.

b.普通耐火型電纜橋架

b. Ordinary fire-resistant cable tray

鋼制鍍鋅后內(nèi)外層涂覆鋼結(jié)構(gòu)防火涂料或用非金屬耐火材料制造。

After galvanizing, the inner and outer layers of steel structure shall be coated with fireproof coating or made of non-metallic refractory materials.

3、復合電纜橋架

3. Composite cable tray

由金屬材料和非金屬材料構(gòu)成的直線段、彎通、附件和支吊架等組成，用以支撐電纜具有連續(xù)的剛性結(jié)構(gòu)系統(tǒng)，連接螺栓和其他緊固件不考慮在內(nèi)。

It is composed of straight sections, bends, accessories, supports and hangers composed of metallic and non-metallic materials to support cables. It has a continuous rigid structural system, and connecting bolts and other fasteners are not taken into account.

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