... . Silicon Steel Products 1) Specification: double-E type power switch iron cores 2) Materials (silicon steel sheet): a) Bao steel: B50A1000, B50A800, B50A600 ... , 50TW1000, 50TW470 c) Wu steel: 50WW1300, 50WW800, 50WW600, 50WW470, 350WW360, 350WW310 d) An steel: 50AW1300, 50AW1000, 50AW800, 50AW600, 50AW470 e) Imported silicon ...