Pipes are used to move and sort items. They can also place and remove items from inventories (like chests, furnaces, etc.). There are seven types of transport pipes: wooden, cobblestone, stone, iron, gold, diamond and obsidian.
There are 5 types of Waterproof Pipes: wooden, cobblestone, stone, iron and gold. Waterproof pipes are made from normal pipes by adding waterproofing agent. Waterproof pipes can transport water, lava, Oil, and Fuel
There are 3 types of Conductive Pipes: wooden, stone, and gold. These pipes can transport energy from Engines to machines. Conductive pipes are made from normal pipes by adding redstone dust.
In addition, Mining Pipe is a pipe only by name, as it cannot transport anything; it is the pipe placed by the Mining Well.
Pipe placement is important. If you want to remove items from a furnace, for example, then a wooden pipe needs to be attached to the side of the furnace. A pipe connected to the top of a furnace places items into the top spot, and a pipe connected to the bottom of a furnace puts items into the bottom spot.
If you connect pipes in certain ways theres no end to the machines YOU could make!