The cold roll thin flange plate newly developed by that company can be roll according to the requirements of the inner diameter and the out diameter of each specification of the flange plate, the thickness of the flange plate is 1 - 8 mm, the maximum processing size of the w outer diameter is 1000 mm, the minimum processing size of the inner diameter is 50 mm, the maximum width of the flange plate is 150 mm, the minimum width of the flange plate is 20 mm, and the material is high-quality carbon steel.