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Difference between revisions of "Tubes"
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[[File:Tubes.jpg|thumb|right|Tubes]] | |||
'''Tube''', or tubing, is a long hollow cylinder used to convey fluids | |||
(liquids or gases). | |||
The terms pipe and tube are almost interchangeable, although minor distinctions exist — generally, a tube has tighter engineering requirements than a pipe. Both pipe and tube imply a level of rigidity and permanence, whereas a hose is usually portable and flexible. A tube and pipe may be specified by standard pipe size designations, e.g., nominal pipe size, or by nominal outside or inside diameter and/or wall thickness. The actual dimensions of pipe are usually not the nominal dimensions: A 1-inch pipe will not actually measure 1 inch in either outside or inside diameter, whereas many types of tubing are specified by actual inside diameter, outside diameter, or wall thickness. | |||