MS U channel material:Q235,SS400,S235JR,ST37-2 size:50* ... *4.5mm-400*104*14.5mm length:6m,9m,12m MS U channel1.Material:Q235,Q195,Q345,SS400,ASTMA362.Standard:GB ... 's requirement. sizehigh(mm)breadth(mm)thickness(mm)W (kg/m)5#50374.55.4386.3#63404.86.6348#804358.04510 ...