channel steel 1.good quality and price 2.quick construction 3.reliable bearing 4.beautiful apperance galvanized c purlin Size:C80- ... .purlin aterial: color,zincalume,zinc 2. material:zinc275,q345,q550 3.Thickness:1.50-3.00mm 4.shape width:any shape. ... convenience at building site.If you need C/Z purline(channel), (c Shape steel,z Shape, u steel Shape)..please feel free to contact with us ...