Long Span Shelving Step Beam, 50x30x1.5, 60x40x1.5, 80x50x1.5, Medium duty boltless shelving Long Span Shelving Step Beam,we can provide various size:50x30x1.5, 60x40x1.5, 80x50x1.5mm(thickness 1.35mm 1.8mm, 2.0mm also available ) Medium duty shelving