Pipelines are not used on Research Assignments, only on Production and Defense Assignments. They transport resources between supply buildings, Reactors, storage tanks, recyclers, and the final output, such as Transporters (freighters) or a weapon (in Defense Assignments). Each pipe section has a size of a single square, and can hold a single atom or molecule.
Defense Assignments Edit
In Defense Assignments Storage Tanks can be used to hold large quantities of atoms and molecules.