Method for manufacturing pipes, involves bending edge of wall of pipe, so that pipe is manufactured along edge of bend area of wall, where tool is engaged at angle for pipe axis

摘要

The method involves bending the edge (2) of the wall (3) of the pipe (1), so that the pipe is manufactured along the edge of the bend area (4) of the wall. A tool (6) is engaged at an angle (7) for the pipe axis (8), and the edge of the wall is rounded. The pipe and the tool are rotated such that the pipe and the tool are wound on each other.