EN DIN GB I-Beam Steel 1.Standard: GB JIS ASTM EN 2.Material: Q235 S235JR SS400 A36 3.Professional manufacturer 1.I-Beam Steel, Steel I-Beam,IPE ... ,IPEAA,IPE BEAM,I Steel Beam 2 ... ,220,250, 280, 300, 320, 360 9.Standard: GB/T706-1988 Q235 S235JR SS400 A36 DIN1025 St37-2 EN DIN GB I-Beam Steel