ive noticed when trying to dimension pipes to find out the radius or angles in which the pipe is bent that i cant always pull that dimension off the part. sometimes il get the straight lengths and maybe and angle but then other times get nothing. why is this? it also varries when opening from an .igs file and a .stp file. My job entails me quoting customers on bending tubes and i need these dimensions for the quote. please help, i might just be doing it wrong. also how do you pull an xyz coordinate chart from this?

What ive been using is smart dimension and clicking the part i want dimensioned but rarely works.