In Korea, where Dunkinâ Donuts opened its first stores recently, it is finding a new audience: Korean customers have swooned over oversized French Cruller munchkins, split in half and filled with Bavarian cream.
Single random pipe has an average length of 20 feet. Any given joint will be somewhere between 17.5 and 22.5 feet. Double random is 40 feet on average with any given joint being between 37.5 and 42.5 feet.
But, to actually determine the size of a pipe, the outside diameter of each pipe or fitting must be measured and compared to the table for size identification. For example, a 3/4 NPT pipe thread has an outside diameter of 1.050 inches. Each thread size has a defined number of threads per inch (TPI). The 3/4 NPT pipe thread has 14 threads per inch. Both the TPI (threads per inch) and OD (outside diameter) of the thread are required for positive identification of thread size because several sizes have the same TPI.