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Distinguish between galvanized sheet and electrolytic sheet
title:2021-04-06 14:10:26view:
Electrolytic sheet is also a kind of galvanized sheet, called electro galvanized sheet SECC, and a common hot-dip galvanized sheet SGCC, both of which are galvanized sheet.
It's easy to distinguish between appearance and secsgcc:
SECC is generally uniform gray;
SGCC is brighter and whiter, with large and small zinc flowers. It is said that there are also zinc free flowers.
Electrolytic plate is coated on the surface of steel plate by chemical method. The cost is low, but the anti rust performance is not as good as galvanized plate
What we usually say about galvanized sheet is hot-dip galvanized sheet, while electrolytic sheet refers to electro galvanized sheet (some people will call it cold galvanized sheet). Like electro galvanized sheet, hot-dip galvanized sheet is coated with zinc. The difference is that the processing technology is different. Generally, hot-dip galvanized sheet is thicker, which can be used inside and outside the room. Depending on the thickness of the coating, electrolytic sheet is thinner, The surface (flatness and finish) is better than that of hot-dip galvanized sheet, which can only be used indoors. The galvanized layer is thinner than that of hot-dip galvanized sheet, but the passivation layer is much lower. In addition, hot dip galvanizing is basically strip, continuous galvanizing. The size of the plating is much smaller.
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