| Tubing (material) |
Article Index for Tubing |
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Information AboutTubing (material) |
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Tubing is a Pipe or hollow cylinder for the conveyance of fluids (liquids or gases). The terms 'pipe' and 'tubing' are almost interchangeable, although minor distinctions exist (generally, "tubing" implies tighter engineering requirements than "pipe"). Both "pipe" and "tube" imply a level of rigidity and permanence, whereas a "hose" is usually portable and flexible. Tubing 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 (i.e., a "1-inch" pipe will not actually measure 1" in ''either'' outside ''or'' inside diameter) — whereas many types of tubing are specified by ''actual'' I.D., O.D., and/or wall thickness. There are many industry and government standards for pipe and tubing. MANUFACTURE There are three classes of manufactured tubing: seamless, as-welded, and drawn-over-mandrel (DOM).
STANDARDS Many standards exist for tube manufacture. Some of the most common ones are as follows:
ASTM material specifications generally cover a variety of grades or types that indicate a specific material composition. Some of the most commonly used are:
In installations using and/or oxygenation sources/contaminants), to leak due to its size molecular/atomic size, and to cause Embrittlement of metals, particularly under pressure. Tubing quality and source must be documented {Link without Title} . SEE ALSO |
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