Galvanized wire white rust spots are formed by further oxidation.The main reason of white rust are:

1.Passivation poor or uneven passivation film thickness is not enough;

2.No oiled surface or strip surface residual moisture;

3.When coiling strip surface contains moisture;

4.Passivation is not completely dry;

5.Moisture or rain water during transport or storage;

6.Finished stored for too long;

7.Galvanized sheet and other acid and other corrosive media contact or stored together.

Previous:Zinc layer off of the main reasons are there?

Next:No