I beam 1. Material : SS400, ST37-2 , A36, S235 JRG1, ... : 6 meter, 9 meter 3. Technology: hot rolle I beeam steel1. Material : SS 400, ST37-2 , A36, S235 JRG1, Q235, Q345 ... to the requirement6. Standard : GB/T 700-1988 I BEAM SPECIFICATIONWaist HeightLeg WidthWaist ThicknessAverage Waist ThicknessTheoretical WeightmmmmmmmmKg/m100684.57 ... can be negotiated according to order. S235JR steel I beam