... Q235, Q345 etc. 2.Length : 6 meter, 9 meter I beam / I-beam / I beeam steel1> Material : SS 400, ST37-2 , A36, ... bag or according to the requirement6>Standard : GB/T 700-1988 PeremeterWaist HeightLeg WidthWaist ThicknessAverage Waist ThicknessTheoretical WeightmmmmmmmmKg/m100684.57 ... founded in 2000. Our main products include angle steel, channel, I-beam, H-beam, deformed bar, round bar, steel pipe, ...