Do I use black steel for air intakes?

[jamiem]

I've found that people are using pipe nipples for the air intake.  I went to home depot yesterday to get them.  I don't think people are using the galvanized so I bought the 'black steel' nipples.  Are those safe or do we need to buy something else.  I know they are on the outside of the drum but the air is going through them so I didn't want the galvanized because I hear so many people talk about the harmful vapors when it gets to a certain temperature.

 

[webowabo]

Yes black pipe is what is used. It is safe. The galvanized however even on the outside of the drum will still get hot enough to make some nasties.