Pipe Junctions/Corners

I'm currently making a fluid storage update for my mod. I have Tanks and such set up already, pipes are coming along slowly, but I'll be able to figure it out.

The issue I'm currently having is that I have no clue how to make junctions. For example, if I want to place a few pipes going upwards then another direction, I want to change the pipe to a corner. For now, my model is a pipe going in all directions that look somewhat ascetically pleasing (much better than pipes transferring water through midair).

Any help would be greatly appreciated. Thanks!