lets see I think it was just under $2 a foot for 1 1/4" sch.40 which is 1.66" OD just a hair smaller than 1.75" but its .140 wall thicker than .120 but it is only half as strong as 1.75 DOM. But I agree, for sliders, bumpers and doors why not. Save the $$DOM$$ for exo's where you really need the extra strength. BoogerWeldz has a full pipe exo and bashes thee sh*t out of it with no probs. The welder is a Millermatic 210, best tool in my shop. I've used it to weld thin sheetmetal on a restoration project to cranking it up and burning some nice fatties on 5/8's