2016SJ/T 99-2016 Core sheets and core stack thickness series for transformers and chokes
1970SJ 99-1987 Laminations for transformers and chokes (G type)
0000 SJ 99-1965
SJ 99-1987 Laminations for transformers and chokes (G type) was changed to SJ/T 99-2016 Core sheets and core stack thickness series for transformers and chokes.