— Category A is high accuracy of the rental;
— Category B — increased accuracy;
— Category B — ordinary accuracy.
The circle of steel can be safely called universal metal rolling, which are used in almost all areas of production. In the production of steel circles, much attention is paid to its accuracy, the compliance of the technology with the relevant standards and GOSTs. In the manufacture of the circle, it should be used precisely the material that will correspond to the future field of use of the metal rolling.