C type purlin 1.Standard:,Q235 2.Thickness:2mm~3mm; 3Length: as requires c steel profile channel 1.Item: C Purlin2.Material: Iron4.Thickness: 2.0-3.0mm5.Length tolerance: +/-5mm6.Color: Blue, Red, Green, Coffee, etcFeatures1.Color:Red,blue,white in common,your special color is avalible,but a little expensive.2.Usage:Purline and Roof beam MODELDIMENSION(MM)CROSS SECTIONALAREA (CM2)KG/MMOI 1*(CM4) ...