Galvanized coil is generally hot galvanized and cold galvanized (electric galvanized)
Cold rolled - galvanized - packaged
Electrogalvanizing is commonly known as cold galvanizing : is the process of forming uniform, dense and well-combined metal or alloy deposition layer on the surface of the workpiece by using electrolysis of cold rolled substrate.
Electrogalvanizing cost is higher, the surface is good, fingerprint resistance, corrosion resistance, do the surface product fineness is higher
There is also a hot dip galvanizing
Hot rolled - galvanized - packaged
Hot plating is to immerse rust removal into zinc solution melted at about 500℃, so that the surface of steel members is attached with zinc layer, so as to play the purpose of anticorrosion.