... Bracing Material: Angle, round pipe, H-section steel Type: X type or V typePurlin Size: C100-C300 ,Z100-Z300 Roof ... panel (1)Single colored corrugated steel sheet(2)Sandwich panel Type(width): 950mm, 970mm, 1150mm Insulation material: EPS,PU, ... Thickness: 50mm-100mmAccessories Semi-transparent skylight beltsVentilatorsDownpipeOuter gutterSurface finish Shot blast, normal paint or hot dip galvanizing