These parts are available in the Routing Library.
Each pipe and tube part can have configurations with different dimensions and properties. For example, pipe with a certain diameter could have multiple configurations with different lengths and thicknesses. A connection point (CPoint) might specify pipe of that diameter, but the Routing application allows you to select other configurations.
Electrical route parts include wires, standard cables and ribbon cables. These parts can have a number of parameters, including external diameter, size of the core, color, and minimum bend radius. They are available in the Cable/Wire Library.
After you create a route, pipe, tube and electrical parts are listed in the Route Parts folder of the assembly’s FeatureManager design tree.