profiled metal for the construction of chassis of fire doors

摘要

a profiled metal intended to be used for the construction of frames of doors, fire or fire.with the purpose of separating two circles to prevent the extension of a fire from one to the other of these environments.which has a first part intended to be housed in one of the groups to be separated, a second part designed to be housed in another environment from separating.the second part presents designs in order to provide a line to a door, and a third portion connecting the first and the second part.in these three parts of the section are carried out in one piece of sheet metal, the third part of connection has at least two series of openings.aligned according to the length of the section, in which the individual openings of each set of openings are separated by ponticelli.and the ponticelli separating individual openings of a series of openings are moved according to the length of the section.with respect to the ponticelli separating individual openings of adjacent series of openings.preferably, the third part of connection of profiled three series of rectangular openings.