... Channel steel 5#---40AB# Channel steel 1.Q195-235,SS400,etc. 2.QB, JIS, European standard 3.length is 6m---12m. hot rolled channel steel Grade: Q235B, SS400 ... supply high quality Channel steel with reasonable price. Including Chinese standard, Japanese standard and so on.Material: SS400, ST37-2, ... size: 50*25*3mm-300*90*13mm5#---40AB# Channel steel 1.Q195-235,SS400,etc. 2.QB, JIS, European standard 3 ...