HOW ALLOWING PREVENT CORROSION?
Corrosion is caused by the reaction of metal with atmospheric oxygen and moisture. Corrosion is prevent by creating a layer of anything between metal surface and external atmosphere. It can be done in following ways.
1.Oiling the metallic surface
2.Paint the metallic surface.
3.Electroplating with Zinc (galvanization)
4.Electroplating with other metals.