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