Method to roll multiple sections.

摘要

Method to roll multiple sections, which starts with a single round section (10) and obtains twin-strand round sections (19-119) and which comprises only one single intermediate pass obtaining two substantially elliptical, united, twin figures (16-116).
<??>Rolled round section produced by twin-strand duplication and starting with another single round section (10), one or more features of the above method being employed.