types of ST37 2 angle steel iron bar prices 45x45, St372 steel plate, under DIN17100 standard St372 steel plate, under DIN17100 standard, we can regard St372 steel plate as Common Carbon structural steel .St372 steel plate is one mainly of Carbon structural steel, St372 is a type of steel sheet under DIN standard which is used to build ship, bridge, belongs to high strength sheet.