... America, Africa, and so on. . Steel Category: General purpose structural steel Steel standard: DIN17100 Steel grade: DIN17100 St 55-3, St 55-3U, St 55 ... -3N St 55-3, St 55-3U ... , St 55-3N. If you are interested in BEBON STEEL and St 55-3, St 55-3U, St 55-3N, Please don ...