Method for manufacturing slots in pipe wall or curved wall, involves arranging stamps in series, where stamps are engraved by pipe wall or curved wall and are curved with inner support of pipe

摘要

The method involves arranging stamps (2) in a series, where the stamps are engraved by a pipe wall or a curved wall and are curved with an inner support of a pipe (10). The small slots (1x) are manufactured and the support is removed from the pipe or the curved wall. The small slots are extended to the finished dimension. The stamps have a conical stamp tip. the pipe is supported in a pipe bed to support it from the outside.