Adds very large pipes with enormous throughput capabilities.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Things related to oil and other fluids.
I noticed the highly popular mod Squeak Through doesn't work with ducts.
If you mean: "I CAN'T pass through ducts like I do with vanilla pipes", yes is wanted, ducts are blacklisted in Squeak Through via Fluid Must Flow, otherwise.. BOOM! Bugs everywhere!
