玻璃钢桥架优越性在于切割方便、组装灵活，安装无需动火，这对于爆炸危险环境并且工程工期紧张的化工厂工程意义尤其重大，因为在爆炸危险环境，工程动火安装时化工厂必须停产，经济效益必受影响。铝合金电缆桥架重量也很轻，由于铝、钢比重不同（Al=2.7，Fe=7.86），按重量计算，铝钢之比约为1：3。铝合金电缆桥架外形尺寸、荷载特性均与钢质桥架基本相近。就费用而言，铝合金桥架的造价比镀锌钢制电缆桥架要高20%，使用寿命是钢制电缆桥架的5倍以上。

The superiority of the glass steel bridge is cutting convenient and flexible assembly and installation without fire, the chemical explosion hazardous environment and engineering significance of plant engineering construction period is especially important, because in the explosion hazardous environment, fire engineering installation of chemical plant must be discontinued, the economic benefit will be affected. Aluminum alloy cable tray weight is very light, due to the different proportion of aluminum and steel (Al=2.7, Fe=7.86), according to weight calculation, the ratio of aluminum steel is about 1:3. The size and load characteristics of aluminum alloy cable bridge are almost the same as those of steel bridge. As far as cost is concerned, the cost of aluminum alloy bridge is 20% higher than that of galvanized steel cable bridge, and the service life is more than 5 times of that of steel cable tray.