Part of an exhaust line, and manufacturing process of said part

An exhaust line element comprising:

• an exhaust volume comprising a metal enclosure with a thickness smaller than 1 mm;
• at least one metal plate with a thickness comprised between 0.5 and 5 mm, the metal plate comprising a central part free from contact with the metal enclosure and between 2 and 4 fastening tabs secured to the central part, each fastening tab being spot and transparently welded to the metal enclosure;
• an accessory configured to be fastened to a motor vehicle structure, the accessory including a lower part welded to the metal plate and a fastener to fasten to the structure of the vehicle;
• a guide element including an orifice cut in the central part of the metal plate, the orifice having an inner section identical to an outer section of the lower part of the accessory, said lower part being inserted in said orifice;
• and
• wherein the exhaust line element includes a second plate connected to the metal plate by a flexible material bridge, the second plate having a thickness comprised between 0.5 and 5 mm and comprising a second central part free from contact with the metal enclosure and between 2 and 4 second fastening tabs secured to the second central part, each second fastening tab being welded to the metal enclosure by spot and transparent welding.

An exhaust line element comprising:

• an exhaust volume comprising a metal enclosure;
• a first metal plate comprising a first central part free from contact with the metal enclosure and a plurality of first fastening tabs secured to the first central part, each first fastening tab being spot and transparently welded to the metal enclosure;
• a second metal plate connected to the first metal plate by a bridge, the second metal plate comprising a second central part free from contact with the metal enclosure and a plurality of second fastening tabs secured to the second central part, each second fastening tab being welded to the metal enclosure by spot and transparent welding;
• a fastening accessory configured to be fastened to a motor vehicle structure, wherein the fastening accessory is welded to the first metal plate and to the second metal plate;
• the first central part of the first metal plate having two first longitudinal edges opposed to one another, at least one first fastening tab being secured to each first longitudinal edge;
• and
• the second central part of the second metal plate having two second longitudinal edges opposed to one another, at least one second fastening tab being secured to each second longitudinal edge.