So I just got this squared away last night. It is 1.5" SS tubing TIG welded together. Got the shrouds from Kurt at Brewsteel. He has been a tremendous help for me in this endeavor and would recomend him to anyone. I think I have the plumbing details worked out now (thanks again Kurt) and have the parts on order. Just got to plumb it and a couple other little things like build a removabe shelf and plate chiller mount.