Carbon steel Profile refers to metal after plastic processing forming , with a certain section shape and size of the solid straight strip . Profiles of various specifications, wide use, in rolling production occupies a very important position.

Large difference in section shape. In profile products, in addition to square, round, flat steel section shape is simple and the difference is not big, most complex section profiles (such as I-steel , H-shaped steel , Z - shaped steel , channel steel , rail , etc . ) not only complex section shape, but also different from each other, the pass design and rolling production of these products have their own particularity;

The complexity of section shape makes the deformation of metal parts, temperature distribution of section and roll wear uneven in the rolling process, so it is difficult to accurately calculate and control the size of rolled parts, and the installation of rolling mill adjustment and guide device is also complicated. In addition, the single variety or specification of complex section profiles is usually small in batch. The above factors make the development of complex section profile rolling technology difficult.