hot sale I beam 1> Material:SSST37-2,Q235, Q345, SS400 2> Length:6M,9m,12m 3>GB/T19001-2008/ ... ISO9001:2008 4>size:50*25*3/4/5 1> Material : SS 400, ST37-2 , A36, S235 JRG1, Q235, Q345 ... etc.2> Length : 6 meter, 9 meter ,12 meter3> ... -Shen Expressway.Our main products include angle steel, channel, I-beam, H-beam, deformed bar and more. Under the ...