Qingdao KXD Steel Structure Co.,Ltd is one of the leading China steel structure barn manufacturers and suppliers equipped with professional steel structure barn factory.17.Steel structure barnAdvantage:*Durability*High quake-proof, water proof and fire proof*Easy to install and maintenance*Fast construction, save time and labor cost*Prefabricated and customized design*High space efficiency*Life time: Over 25-50years*Environment friendly*Nice appearanceDetails:*Main frame: Q345B/ Q235B hot rolled H beam or welded H beam*Secondary frame: C/Z purlin*Bracing: Angel and round pipe*Connection: Normal bolts and High strength bolt*Maintenance: Sandwich panel: EPS, Rock wool, Glass wool, 50-150mm thicknessColorful corrugated steel sheet: 820 type, 0.3-0.6mm thickness*Window: Sliding window, skylight belts etc*Door: Sliding door, rolling up door, etc*Guttering system*Crane*Other accessories.Our service:-Quotation according to yours drawing-Design and quotation according to yours requirements-Delivery the entire steel building to you by containers;-Offer all the detailed drawings for installation and fabrication http://www.cnsteelstructure.com/steel-structure-barn