Pipe section
From DwarfFortressWiki
Pipe sections are used as components in the construction of screw pumps. You can't build pipes by themselves in the current version. To move water or magma from one place to another, use channels.
Pipe sections can be manufactured from wood at a Carpenter's Workshop, from metal at a Metalsmith's Forge, or from glass at a Glass Furnace.
It takes 1 wood, or 3 metal bars to create a pipe section

