... JIS, European standard 3.length is 6m---12m. hot rolled channel steel Grade: Q235B, SS400, Q235, Q345, Q345B, ST37-2, ... 9,12We supply high quality Channel steel with reasonable price. Including Chinese standard, Japanese standard and so on.Material: SS400, ... size: 50*25*3mm-300*90*13mm5#---40AB# Channel steel 1.Q195-235,SS400,etc. 2.QB, JIS, ... 909.0013.0038.10 Hot Rolled JIS and G/B Channel Steel