In tube end forming practices, is it possible to first reduce the diameter of the pipe (tube 0.9mm thick) and then expand it, at the same end, by about 1mm in total, with a transistion radius of 8mm ? Please see attached image. Though it might be exaggerated, but the image should suffice. I want to know the feasibility of it. Material is Ferritic Steel. Of diameter 55 OD. The sizing is 1: Reducing to 50.6 ID and then 2. Expanding by 1mm diametrically. Thank You.