Vertical Pipe Connections / Pipes on slopes

Pipes should allow for vertical connections through the top of the pipe and bottom of the pipe also pipes look weird when going down long sloped surfaces pipes should be able to attach to the angle of the sloped terrain and move sloped down the grade. I work in an oil refinery and both of these i have seen inside the refinery and are realistic, thank you.

great idea its a pain going up and down slopes and to keep it tidy lol