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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. [1] " 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 ...

  3. Krah - Wikipedia

    en.wikipedia.org/wiki/Krah

    In 2008 the Krah pipe manufacturer (Krah Pipe Systems) in Greenwood/USA set up the world's first plant for large diameter helical extrusion pipes, ranging up to 120 inches (3,048 mm) for municipal water.

  4. Pipe (fluid conveyance) - Wikipedia

    en.wikipedia.org/wiki/Pipe_(fluid_conveyance)

    The history of copper pipe is similar. In the 1930s, the pipe was designated by its internal diameter and a 1 ⁄ 16-inch (1.6 mm) wall thickness. Consequently, a 1-inch (25 mm) copper pipe had a 1 + 1 ⁄ 8-inch (28.58 mm) outside diameter. The outside diameter was the important dimension for mating with fittings. The wall thickness on modern ...

  5. Cast iron pipe - Wikipedia

    en.wikipedia.org/wiki/Cast_iron_pipe

    Cast iron pipe is pipe made predominantly from gray cast iron. It was historically used as a pressure pipe for transmission of water, gas and sewage, and as a water drainage pipe during the 17th, 18th, 19th and 20th centuries.

  6. Copper tubing - Wikipedia

    en.wikipedia.org/wiki/Copper_tubing

    For example, DN20 is the size for copper pipe with an outside diameter of 19.05 mm or 3 ⁄ 4 inch. While pipe sizes in Australia are inch-based, they are classified by outside rather than inside diameter (e.g., a nominal 3 ⁄ 4 inch copper pipe in Australia has measured diameters of 0.750 inches outside and 0.638 inches inside, whereas a ...

  7. Major natural gas pipeline replacement project planned for ...

    www.aol.com/major-natural-gas-pipeline...

    Columbia Gas is replacing a 4.2-mile-chunk of 20-inch-diameter pipe that is under the street. It is part of a bigger line that extends from Upper Arlington to Gahanna.

  8. Iron pipe size - Wikipedia

    en.wikipedia.org/wiki/Iron_pipe_size

    In 1948, the DIPS came into effect, when greater control of a pipe's wall thickness was possible. CTS diameter always specifies the outside diameter (OD) of a tube, where pipe diameter specifications only approximate the pipe inside diameter (ID) for sizes of 12 inch or less, and STD wall thickness.

  9. A 120-year old pipe gave way, flooding Cincinnati homes. Now ...

    www.aol.com/120-old-pipe-gave-way-001523423.html

    Part of an East End water main broke twice in early 2021. Now, it will be replaced.

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