Metallurgical steel rolling blades are the core tools used in the steel industry for rolling, shearing and splitting steel strips. They are known as the "sharp teeth" for steel forming. By means of the moving upper blade and the fixedl lower blade, with a reasonable blade gap, they apply shear force to various thicknesses of metal plates, causing the plates to break and separate according to the required dimensions. They have extremely high requirements for hardness, wear resistance and heat resistance.