... # Channel steel 1.Q195-235,SS400,etc. 2.QB, JIS, European standard 3.length is 6m---12m ... Grade: Q235B, SS400, Q235, Q345, Q345B, ST37-2, A36, S235JRG Technique: Hot Rolled Length(m): 6, ... standard, Japanese standard and so on.Material: SS400, ST37-2, A36, S235JRG1, Q235, Q345 etc. Standard: GB/ ... requests. Length: 6meter, 9meter, 12meterChinese standard size: 50*37*4.5mm -400*104*14.5mm Japanese standard ...