Difference between revisions of "Tubing"

[[Category:Piping]]{{Knoppen}}

[[File:Tubing.jpg|thumb|right|Tubing]]

'''Tubing''', or tube, 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.

==Manufacture==

There are three classes of manufactured tubing: seamless, as-welded or electric resistant welded (ERW), and drawn-over-mandrel (DOM).

* Seamless tubing is produced via extrusion or rotary piercing.

* Drawn-over-mandrel tubing is made from cold-drawn electrical-resistance-welded tube that is drawn through a die and over a mandrel to create such characteristics as dependable weld integrity, dimensional accuracy, and an excellent surface finish.

==Sources==

[http://en.wikipedia.org/wiki/Tubing_(material) Wikipedia Tubing]