steel I Beams (ASTM,JIS,EN) 1> Material : SS 400, ST37-2 , A36, S235 JRG1, Q235, ... > 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. Specification necessary for inquiries: product name, standard performed, materials, specification ...