Craft projects to make using Pipe nipplesIn plumbing and piping, a nipple is a fitting, consisting of a short piece of pipe, usually provided with a male pipe thread at each end, for connecting two other fittings. The length of the nipple is usually specified by the overall length with threads. It may have a hexagonal section in the center for wrench to grasp, or it may simply be made from a short piece of pipe. A "close nipple" has n... From Wikipedia
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