... power transformers 3)accordance with customers' request Silicon steel sheet:1) Specification:three phase2) Property: international ... 0.35mm 0.5mm4) Raw materials ( CRGO and CRNO):a) Bao steel: B50A1000, B50A1300, B50AH470, B50AH600, B50AH800, B35A270 ... ,B35A300b) Ann steel: 50AW1000,50AW1300c) Wu steel: 50WW1300, 50WW1000, 50WW800d) Imported silicon steel such as POSCO steel4) ...