Hello people
Can any one tell me something about Corrosion and its Main types?
How we can prevent it?

Thanks

Your's
Shanas

Is this homework in your first year of engineering or something?

Read this article, or your textbooks

Corrosion - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Corrosion)

Come on, this is a straight question. Find yourself a engineering book to read or just type "corrosion" on your internet search engine.