Forked construction unit production method e.g. for production of double wall through holes, involves tubing section with longitudinal axis and pipe wall transformed by stamp radially inward towards base

摘要

The method involves a tubing section with a longitudinal axis (A) and a pipe wall is transformed by a stamp radially inward towards a base. The base is opposite the tubing section so that a break develops in the tube. The tube is separated with an angle smaller or equal to 90 degrees to its longitudinal axis (A) in the range of the break so that a two forked construction is provided and extends outwards.