Tapering: Mechanical process by which it is possible to reduce the diameter of a pipe (without the use of welding or any other processing)Tapering: Mechanical process by which it is possible to reduce the diameter of a pipe (without the use of welding or any other processing)
Edging: Processing that allows you to create an edge at the end of a tube for a possible fixing of a sleeve
Enlargement: Mechanical process that allows to enlarge the pipe (without the use of welding or other processes)