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彩钢板的金属镀层可以想象成是均匀分布在钢板的正反两面，平方重量指的就是每平方面积的钢板上，正反两面所附着的金属镀层的重量，

通常以g/㎡表示。例如铝锌合金镀层彩钢板AZ100g/㎡，就是指每平方米面积的彩钢板上，正反两面附着的铝锌合金镀层重量是100克。

镀层平方重量的高低很大程度上影响着钢板的表面耐腐蚀性能和切口保护性能。

The metal plating of the color steel plate can be imagined to be evenly distributed on the positive and reverse sides of the steel plate, and the square weight

refers to the weight of the metal plating attached to the steel plate per square area, usually indicated by g / ㎡.For example, aluminum and zinc alloy coating

color steel plate AZ100g / ㎡, which refers to the color aluminum plate of each square meter area,

the attached aluminum-zinc alloy coating weight is 100 grams.

The square weight of the coating greatly affects the surface corrosion resistance and cutting protection performance of the steel plate.