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  2. Nominal Pipe Size - Wikipedia

    en.wikipedia.org/wiki/Nominal_Pipe_Size

    Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside diameter).

  3. Polyvinyl chloride - Wikipedia

    en.wikipedia.org/wiki/Polyvinyl_chloride

    Polyvinyl chloride (alternatively: poly (vinyl chloride), [6] [7] colloquial: vinyl [8] or polyvinyl; abbreviated: PVC [8]) is the world's third-most widely produced synthetic polymer of plastic (after polyethylene and polypropylene ). About 40 million tons of PVC are produced each year.

  4. National pipe thread - Wikipedia

    en.wikipedia.org/wiki/National_pipe_thread

    National pipe taper fuel (NPTF) National Pipe Taper Fuel ( NPTF, also called Dryseal American National Standard Taper Pipe Thread, defined by ASME B1.20.3) is designed to provide a more leak-free seal without the use of PTFE tape (often referred to by the popular brand name "Teflon") or another sealant compound.

  5. ISO/IEC 7810 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_7810

    ISO / IEC 7810 Identification cards — Physical characteristics is an international standard that defines the physical characteristics for identification cards. [1] The characteristics specified include: Physical dimensions. Resistance to bending, chemicals, temperature, and humidity. Toxicity.

  6. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    Pipe fittings: 1) Copper (solder); 2) Iron or brass (threaded); 3) Brass (compression); 4) Brass (compression to solder); 5) Brass adapters. PVC fittings. A fitting or adapter is used in pipe systems to connect sections of pipe (designated by nominal size, with greater tolerances of variance) or tube (designated by actual size, with lower ...

  7. Peripheral venous catheter - Wikipedia

    en.wikipedia.org/wiki/Peripheral_venous_catheter

    A peripheral venous catheter is the most commonly used vascular access in medicine. It is given to most emergency department and surgical patients, and before some radiological imaging techniques using radiocontrast, for example. In the United States, in the 1990s, more than 25 million patients had a peripheral venous line each year.

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