U channel U beam material:Q235,SS400,S235JR,ST37-2 size:50*37*4.5mm-400*104*14.5mm length:6m ... ,9m,12m U channel U beam1.Material ... :Q235,Q195,Q345,SS400,ASTMA362.Standard:GB,ASTM,DIN,JIS,BS 3.Thickness:4.5-14.5mm 4.Size ... . sizehigh(mm)breadth(mm)thickness(mm)W (kg/m)5#50374.55.4386.3#63404.86.6348#804358.04510#100485 ...