ok so
1 US pipe
2. stay under 1 1/2
3 do slow
4. seam in
5.No lube
6. 
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.
Poll
