channel steel Material:Q235 or equivalent Size:50*37*4.5 -- 400*102*12.5 Length:5.8M-12M Delivery time:in 15-20 days... u steel channel size:75*35/ 75*40/ 75*45/ 75*50/ 70*32/ 60*27/28*27mm Thickness: 0.3 - 0.8mm Length: 2.9m, 3m, 3.6m, 4m... U channel steel Steel grade:Q195-235; Q235B Standard:GB/T 700-1988 Size: Height 50-320mm,6/9/12m...