Quote:
Originally Posted by rdupree
If you are going to use iron pipe, be sure to use galvanized pipe. At a former employer, they installed a new air system, all of it in black iron pipe. Inside of about 6 months, the inside of the pipe was already rusting and generating lots of rust that clogged the insides of air tools, etc.
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Galvanized pipe has issues also. The galvanize will start to flake off, check out this article by Exair, very informative:
Compressed Air Piping