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2. Iron pipe size - Wikipedia

   en.wikipedia.org/wiki/Iron_pipe_size

   The iron pipe size standard came into being early in the 19th century and remained in effect until after World War II. The IPS system was primarily used in the United States and the United Kingdom. In the 1920s, the Copper Tube Size (CTS) standard was combined with the IPS standard.

3. National pipe thread - Wikipedia

   en.wikipedia.org/wiki/National_pipe_thread

   The taper rate for all NPT threads is 1 inch of diameter in 16 inches of length (3 ⁄ 4 inch per foot or 62.5 millimeters per meter) measured by the change of diameter (of the pipe thread) over distance of thread. The half-angle (between the taper surface and the axis of the pipe) is arctan(1 ⁄ 32) ≈ 1.7899° ≈ 1° 47′.

4. 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 ...

5. Cement-mortar lined ductile iron pipe - Wikipedia

   en.wikipedia.org/wiki/Cement-mortar_lined...

   Cement-mortar lined ductile iron pipe is a ductile iron pipe with cement lining on the inside surface, and is commonly used for water distribution. Cement-mortar lined ductile iron pipe is governed by standards set forth by DIPRA ( Ductile Iron Pipe Research Association ), and was first used in 1922 in Charleston, South Carolina .

6. Crest Whitestrips are less than $30 today during the Amazon ...

   www.aol.com/lifestyle/crest-whitestrips-are-less...

   Amazon is running a major winter sale this week that's bringing the prices down on lots of home essentials — you can save on activewear, dumbbells, treadmills, and more.One of the best deals we ...

7. Enrique Hernandez, Jr. - Pay Pals - The Huffington Post

   data.huffingtonpost.com/paypals/enrique-hernandez-jr

   From January 2008 to December 2012, if you bought shares in companies when Enrique Hernandez, Jr. joined the board, and sold them when he left, you would have a 22.4 percent return on your investment, compared to a -2.8 percent return from the S&P 500.