If I have a pipe above ground should I consider cathodic protection?

[brvs2014]

If I have a pipe above ground should I consider cathodic protection? Or in which cases cathodic protection is strictly required?

 

[LittleInch]

No. It doesn't work.

When it's buried or underwater

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[bimr]

Cathodic protection can, in principle, be applied to any metallic structure in contact with a bulk electrolyte. In practice its main use is to protect steel structures buried in soil or immersed in water. It cannot be used to prevent atmospheric corrosion.

 

[JStephen]

By golly, this could open up a whole new field!

 

[BigInch]

But you have to turn the current around to the other direction.
Otherwise you need lightning protection

https://pgjonline.com/2014/02/18/lightning-a-new-key-for-pipeline-protection/

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