Buzzaw, 1. 32" is good for most but it boils down to the stool or chair seat height used. (I use a pneumatic adjustable office chair & 32" legs) 2. No pitch to speak of, see #3 (ask for NPT). 3. NPT is National Pipe Thread, a tapered thread used with all related pipes and fittings. These get tighter as they're screwed together, never bottoming out (unless way over torqued or cut wrong), but they do get tight. 4. You really want threaded (NPT) Steel Pipes for the legs, both because you need the threads to match the pipe couplings Lonny uses (they have NPT Threads) and for their strength + weight (more weight down low helps with stability).
