The main forms of the unit are cantilever roller ring frame, fixed speed ratio between passes, single-line micro-tension high-speed continuous rolling without torsion.

1, cantilever roller ring stand finishing mill group is generally composed of four rolling mills, all of which are cantilever roller ring stands, arranged alternately horizontally and vertically. There are vertical loopers between stands to realize tension-free rolling.

2. When the dynamic performance of speed drive can't meet the requirements of high-speed rolling, fixing the roll speed ratio between passes is the only alternative method to ensure normal continuous rolling.

3. Monofilament micro-tension high-speed continuous rolling passes through 2-3 rolling grooves in the oval-round hole system, and 3-4 specifications of rolled pieces supplied by pre-finishing rolling are rolled into finished products with dozens to twenty specifications.