The material of manufacture and the range of the round bar in accordance with GOST 2590-2006, where the bar can be made of steel of the following grades: carbon (St3, St20, St35, St45); low alloyed (Steel 40X, Steel 40XH); high-alloyed (08 18 10, 38XH3MA, 40 2 14 17 2 and others), high-speed (U7; U7A; U8A)