Cold Rolled grain oriented electrical steel is called CRGO.it mainly used in the transformer ready core manufacturing.so it is called “Transformer steel”.to compare with the “None Oriented electrical steel” . The magnetic properties of oriented silicon steel have strong directionality, and it has superior high permeability and low loss characteristics in the easily magnetized rolling direction. The iron loss of the oriented steel in the rolling direction is only 1/3 of the transverse direction, the ratio of magnetic permeability is 6:1, the iron loss is about 1/2 of HRC, and the magnetic permeability is 2.5 times Higher.