Method of bending measuring tubes

摘要

Method in which a pipe of length (L) is bent between a mold. Prior to molding a flexible support body is placed inside the pipe and one end of the pipe closed. The pipe is then filled with a liquid, which is then allowed to harden. The pipe is then placed in the mold which is closed to give the pipe the desired shape. After molding the pipe is heated to remove the liquid and the support is withdrawn. The support body is a spiral spring of smaller outer diameter than the inner diameter of the pipe and has a stop on one end that is used to close the pipe before it is filled with a fluid such as wax, oil, etc.