... , ST37-2 , A36, S235 JRG1, Q235, Q345 etc. 2> Length : 6 meter, 9 meter I beam / I-beam / I beeam steel1 ... , ST37-2 , A36, S235 JRG1, Q235, Q345 etc.2> Length : 6 meter, 9 meter ,12 meter 3> Chinese Standard size : 100 ... .743.429300126914.434.4633201309.51552.717Grade : Q195-235 ,Q235B Length : 6-12mAs one of leading steel enterprise in China, founded in ...