Actual Difference….

[Birken Vogt]

It all comes back down to: Cite the source.

 

[busman]

Don't know where he is located but most national codes allow galvanized for gas and some states like NJ are near the ocean and require it. I live in MA. and am a licensed gas fitter. MA does not (and never has) allow galvanized pipe use on gas

Northern Virginia (DMV)