... 66mm / with air gap)2) Materials (silicon steel sheet): a) Bao steel: B50A1000, B50A800, B50A600, B50A470, B35A550, ... 350WW360, 350WW310 d) An steel: 50AW1300, 50AW1000, 50AW800, 50AW600, 50AW470 e) Imported silicon steel coil stocks Jiangyin Huaxin Electrical Equipment ... development and manufacturing of international standard EI type silicon steel sheets and non-standard lamination (magnetic cores ...