steel I Beams (ASTM,JIS,EN) 1> Material : SS 400, ST37-2 , A36, S235 JRG1, Q235, Q345 etc. ... 2> Length : 6 meter, 9 meter steel I Beams (ASTM,JIS ... ,EN)Usage : can be widely used in various construction structures, bridges, autos, brackets, mechanisms and so on ...