Just for someone else reading this that may not be familiar, you want to use steel pipe, not iron. If it's galvanized, you'll need to grind the galvanized coating back at least 3/4" from the weld area. Not only is it poisonous, it will affect the integrity of the weld. For a given nominal size, schedule 40 and schedule 80 have the same OD, but 40 has a thinner wall than 80.
Keith, ask around if anyone knows a pipefitter. A good fitter can really help you learn to weld pipe, they do it all day long....
Keith, ask around if anyone knows a pipefitter. A good fitter can really help you learn to weld pipe, they do it all day long....