Not as hard to do as it looks.
Just mark the pipe where you want the bend, get a hammer and cold chisel ( slightly blunt ) give it a firm hit.
The pipe will be creased enough for you to manually pull a bend.
Be careful not to over bend the pipe, you may crack the pipe if you have to unbend the pipe.
Should be good from a few days to a few years - depending on your capabilities.
Just be sure you get paid before leaving the job.