ok so
1 US pipe
2. stay under 1 1/2
3 do slow
4. seam in
5.No lube
6. ![Beer :beer:](https://board.marlincrawler.com/Smileys/marlin/beer.gif)
7. sch 40 what ever that means
schedule 40 will be fine, "schedule" 40,80 or 160 are the pipes spec data referring to its pressure ratings, as a liquid carrying vessel. its a bumper or whatever dont worry about the schedule #'s.
#8 on your list should be : duct tape one end of the pipe, fill with water ( FULL!) and tape the other end then bend. this will act as the pipe being solid and help reduce flattening.