How are pipes and tubes defined differently?

The correct response highlights a fundamental distinction between pipes and tubes: the primary purpose of pipes is to transport fluids, which can include liquids and gases, while tubes are generally associated with constructing systems, including providing structural support and carrying various media through different applications.

This differentiation is crucial in the context of engineering and construction, where understanding the specific applications of pipes and tubes can influence design and material selection. Pipes, often defined by their nominal diameter and pressure ratings, are engineered for fluid transport under pressure, whereas tubes are often specified by their precise outer diameters and wall thicknesses, making them suitable for applications that require exact tolerances or are subject to mechanical stress.

The other options introduce characteristics that do not accurately define the primary functional differences between pipes and tubes. Focusing on their fundamental roles provides a clearer understanding necessary for anyone involved in the supervision or installation of medical gas systems.