construction Steel Structure Warehouse pre engineered structures professional

construction warehouse pre engineered structures professional 1. Products description for the construction warehouse ( made of steel frame ) : Main Steel Steel Beam Column Q235B , Q345B Secondary Steel Tie Bar Q235B Purlin C and Z purlin Bracing Q235B Accessories Surface Painted or Hot Dip Galvanized Door Rolling Up Door or Sliding Door Window PVC or Aluminum Alloy Roof and Wall Panels Corrugated Steel Sheet , EPS Sandwich Panel , Rock Wool Sandwich Panel , PU Sandwich Panel