c purlin/section steel Size:C80-C180 Thickness:0.5-3mm Material:Q195-Q235 c purlin, section steelSpecifications1.purlin aterial: color,zincalume,zinc 2. material:zinc275,q345 ... at building site.If you need C/Z purline(channel), (c Shape steel,z Shape, u steel Shape)..please feel free to contact with ...