A METHOD FOR MANUFACTURING PERFORATED PIECES OF PLATE OR STRIP MATERIAL USED IN THE CONSTRUCTION INDUSTRY AND A PIECE MANUFACTURED BY THE METHOD

摘要

A method for manufacturing a piece (10) including metal plate or strip material used in the construction industry, in which method holes (11) are formed in the metal plate or strip material by pressing the sheet or strip material at the point of the hole to be formed and thus forcing the material to be transferred from the area of the hole to be formed to the edges of the hole (12). The invention also concerns a piece manufactured by the method.