Items Specification Main Steel Frame Column Q235, Q345 Welded H Section Steel Beam Q235, Q345 Welded H Section Steel Secondary Frame Purlin Q235 C and Z pur Knee brace Q235 Angle Steel Tie Rod Q235 Circular Steel Pipe Brace Q235 Round Bar Vertical and Horizontal Support Q235 Angle Steel, Round Bar or Steel Pipe Maintenance system Roof Panel EPS Sandwich Panel /Glass Fiber Sandwich Panel / Rock Wool Sandwich Panel / Pu Sandwich Panel /Steel Sheet Wall Panel Sandwich Panel / Corrugated Steel Sheet Accessories Window Aluminium Alloy Window / PVC Window / Sandwich Panel Window Door Sliding Sandwich Panel Door / Rolling Metal Door / Personal Door Downspout PVC Live load on Roof In 120kg/Sqm (Color steel panel surrounded) Wind Resistance Grade 12 Grades Earthquake-resistance 8 Grades Structure Usage Up to 50 years Temperature Suitable temperature.-50ºC~+50ºC Certification CE, SGS, ISO9001:2008, ISO14001:2004 Finishing Options Vast array of colors and textures available Paint Options Alkyd painting, two primary painting, two finish painting (gray paint, red paint, white paint, epoxy zinc etc.) Or Galvanized.