Channel steel 5#---40AB# Channel steel 1.Q195-235,SS400,etc. 2.QB, JIS, European standard 3.length is 6m---12m. hot rolled ... standard and so on.Material: SS400, ST37-2, A36, S235JRG1, Q235, Q345 etc. Standard: GB/JIS/EN/ASTM/DIN and others. Packing ... -300*90*13mm5#---40AB# Channel steel 1.Q195-235,SS400,etc. 2.QB, JIS, European standard 3.length is 6m---12m. size ...