This is a case where the surface before painting was not completely dry and possibly had moisture accumulations the shows when a thin layer of the paint got dried and the corrosion peeps out. It is very common. Now the same surface can be cleaned may be you can use Emery cloth then wipe dry before painting.
On 01-Mar-2018 17:39, "Shyamal Das" <das.shyamal@gmail.com> wrote:
HiFirst 2 pics looks similar to uniform corrosion and the third is localized corrosion.Kind RegardsShyamal--On 1 Mar 2018 3:36 pm, "Guru. Thilakar" <guru.thilakar@gmail.com> wrote:Dear experts,--Which type of painting defect is this i attached the photo anyone please explain.Regards,Guru.G
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