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I have a few examples of how much copper expands when it is bent to 90 degrees, just need a little help to help me find out which is correct, i know the actual bend from start to finish is twice the diameter of the pipe being bent,am i right? but i dont think this is actually how much the pipe expands, i been told not to worry about this to much because in the real world you will just cut off the excess pipe, but i want to know how much!!!,lets a 100mm length of 15 mm pipe will expand and same dimensions for 22mm pipe, there must a very easy way,a formula has been used i just cant find it anywhere, be gentle im a learner,lol.......
cheers......
cheers......