On the subject of welding EMT, I find that it flares up a bit and I have to scrape/sand off the zinc coating before I weld it.
Quote Originally Posted by FrankCrank View Post
Hey Ed,

Nice looking frame you're doing there. I'm a newcomer to using galvanised tubing, only recently discovered it at the local steel shop. Great stuff to work with, and TIGs nicely with no prepping. Mine looks like yours in that the seams are quite prominent. A neighbour got some similar steel from another shop, and his was mixed - some with seams and some without. I assume the stuff without seams is dipped after the tube is welded at the factory. Been using it for a few projects around the house, and at 1.2mm wall on the smaller tubes might be tempted to do a bike project with it.
Anyways - happy building