I beam / I-beam / I beeam steel 1> Material : SS 400, ST37-2 , A36, S235 ... JRG1, Q235, Q345 etc. 2> Length : 6 meter, 9 meter I ... beam / I-beam / I beeam steel1> Material : SS 400, ST37-2 , A36, S235 ... .434.4633201309.51552.717Grade : Q195-235 ,Q235B Length : 6-12m i beam