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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. 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.

4. Cast iron pipe - Wikipedia

   en.wikipedia.org/wiki/Cast_iron_pipe

   Cast iron pipe formed using this procedure was typically oven-cooled under controlled time and temperature conditions. As with metal molds, pipe was typically annealed to eliminate any stresses in the pipe, and were then cleaned, inspected, tested, gauged (for dimensions), coated internally and/or externally, and stored for use. [5]

5. Plumbing - Wikipedia

   en.wikipedia.org/wiki/Plumbing

   The Mesopotamians introduced the world to clay sewer pipes around ... copper waste pipe. [12] ... are commonly found with nominal pipe sizes from 3 ⁄ 8 inch (9.5 mm ...

6. Cured-in-place pipe - Wikipedia

   en.wikipedia.org/wiki/Cured-in-place_pipe

   As one of the most widely used rehabilitation methods, CIPP has applications in sewer, water, gas, chemical and district heating pipelines ranging in diameter from 0.1 to 2.8 meters (2–110 inches). The process of CIPP involves inserting and running a felt lining into a preexisting pipe that is the subject of repair.

7. Pipeline video inspection - Wikipedia

   en.wikipedia.org/wiki/Pipeline_video_inspection

   Older sewer lines of small diameter, typically 6-inch (150 mm), are made by the union of a number of short 3 feet (0.91 m) sections. The pipe segments may be made of cast iron , with 12 feet (3.7 m) to 20 feet (6.1 m) sections, but are more often made of vitrified clay pipe (VCP), a ceramic material, in 3 feet (0.91 m), 4 feet (1.2 m) & 6 feet ...