How do i bend a concentric bend on a rigid conduit?

Question

for a vessle or tank in a refinery

Answer 1

sounds simple, but a conduit bender for 20 mm and 25mm, anything over that you will need a machine

Answer 2

Rigid conduit is pipe - I don't think you are supposed to bend it but use connections and/or flex wall tubing. Thin wall conduit can be bent with a standard bender, doing it in small sections to make a bigger bend.