NFA E620D steel plate/sheet,NFA36-231 E620D steel plate/sheet, under NFA standard, we can regard E620D steel plate/sheet as high yield strength steels for cold-forming steels. E620D steel plate is mainly used as high yield strength steels for cold-forming steels.The NFA36-231 E620D steel is equivalent to SEW092 QStE600TM,EN S600MC and BS 68F62 steel grades.