... steel 50TW800, 50TW600, 50TW1000, 50TW470D)Ma steelM50W470,M50W6003)Gap sizes EI-280.4, 0.5EI-1507.23EI-571.2EI-1141.9 ... ,2.5,3.0,4.0,4.83,EI-1055EI-961.5,1.8, 2.0, 2.2,2 ... -480.38, 0.8, 1.0, 2.4 EI-133.26.0,6.73,8.38website:http://www.chinasiliconsteel.com/ Transformer ei lamination