When cleaning the end of a piece of copper tube for making a soldered joint, it should be cleaned for a distance slightly more than twice the distance required to enter the socket of the fitting is false.
The given statement is not true that When cleaning the end of a piece of copper tube for making a soldered joint, it should be cleaned for a distance slightly more than twice the distance required to enter the socket of the fitting. The 1/4 more than the insertion depth. The end of the tube can be cleaned by using the sand cloth or the nylon cloth it should be cleaned for distance only slightly more than the depth of the fitting socket.
Thus, the copper tube can be cleaned by using the sand cloth.
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