I run Black iron and galvanized pipe, 1/2" threadded, it's ANSI rated for air use to 160 PSI, is very simple, I used 3/4 " PVC hangers on every rafter to mount it and in most cases is pretty inexpensive, more than PVC but in my opinion it is worth it. also dissassembles easly as it assembles so you can take it apart, and take it with you when you leave. Just don't buy long sections ( like under 8' ), that way you can couple them togther with the couplers, and if you ever want to expand, you replace the coupler with a Tee, and go from there, also allows you to put all the stuff in the back of a truck when you move, so you can install it there.