... 8-12m' 4.Packing: Nude packing U channel (U section,U beam) material:Q235,SS400,S235JR,ST37- ... you all kinds sizes of U channel steel. U channel (U section,U beam)material:Q235,SS400,S235JR ... in bundlethe details as below: specification of U beamsizehigh(mm)tolerancebreadth(mm)tolerancethickness(mm)toleranceW ... 0.617.2416B#160±2.065±2.58.5±0.619.75218A#180±2.068 ... ±3.088±3.58±0.838.083 MS. AMY0086-18633340967 ...