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For structural tubing, see hollow structural section. A hollow structural section (HSS is a type of metal profile with a hollow tubular cross section.
Plastic tubing.
Plastic tubing.

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. ASTM International ( ASTM) originally known as the American Society for Testing and Materials is an international Standards organization that develops and publishes In Metallurgy, stainless steel is defined as a Steel Alloy with a minimum of 11 ASTM International ( ASTM) originally known as the American Society for Testing and Materials is an international Standards organization that develops and publishes In Metallurgy, stainless steel is defined as a Steel Alloy with a minimum of 11 ASTM International ( ASTM) originally known as the American Society for Testing and Materials is an international Standards organization that develops and publishes ASTM International ( ASTM) originally known as the American Society for Testing and Materials is an international Standards organization that develops and publishes In Metallurgy, stainless steel is defined as a Steel Alloy with a minimum of 11 ASTM International ( ASTM) originally known as the American Society for Testing and Materials is an international Standards organization that develops and publishes Carbon steel, also called plain carbon steel, is Steel where the main alloying constituent is Carbon. ASTM International ( ASTM) originally known as the American Society for Testing and Materials is an international Standards organization that develops and publishes In Metallurgy, stainless steel is defined as a Steel Alloy with a minimum of 11 British Standards are produced by BSI British Standards, a division of BSI Group that is incorporated under a Royal Charter and is formally designated Some of the most commonly used are:

In installations using hydrogen, copper and stainless steel tubing must be factory pre-cleaned (ASTM B 280) and/or certified as instrument grade. Hydrogen (ˈhaɪdrədʒən is the Chemical element with Atomic number 1 This is due to hydrogen's particular propensities: to explode (in the presence of oxygen and/or oxygenation sources/contaminants), to leak due to its size molecular/atomic size, and to cause embrittlement of metals, particularly under pressure. Oxygen (from the Greek roots ὀξύς (oxys (acid literally "sharp" from the taste of acids and -γενής (-genēs (producer literally begetteris the Embrittlement is a loss of Ductility of a material making it Brittle. Tubing quality and source must be documented [1].

See also

PFA Hyflon, but there is information about PFA Teflon which is Perfluoroalkoxy in the Wikipedia //--> Tap water ( running water) is part of indoor Plumbing, which became available in the late 19th century and common in the mid-20th century A pipe is a tube or hollow cylinder used to convey materials or as a structural component For other uses see Pipe. Within Industry, piping is a system of pipes used to convey Fluids ( Liquids and Hydraulic machinery are machines and tools which use Fluid power to do work
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