1.The corrosion resistance of the hot galvanizing is dozens of times of cold galvanizing.

2.The method of operation is difference: which the hot galvanizing means bathed the steel into 480-500 degree zine liquid, but the cold is zinc plated through electroplating or other methods at normal temperature.

3.The thickness of galvanized layer is different, the thickness of hot galvanizing is much greater than that of cold galvanizing.
4.The surface is different, cold galvanizing appearance is more smooth than hot galvanizing.
5.Price is different, hot galvanizing is more expensive than cold galvanizing.
6.Cold galvanizing just be plated only one side, but hot galvanizing is all plated.
7.The zine layer of hot galvanizing can keep long than cold galvanizing.