... :CE(DIN18800),ISO9001:2000, 2.Minimum Steel Quantity 3.High Construction Efficiency steel shed Name Steel ShedDimensionsLengthHbeam:4000-15000mmThickness:web plate:6-32mm ... ,Rock wool , PU sandwichMaterial Q235B Q345B China standard steel Sheet 0.5mm or 0.6mm galvanized sheet Name ... ,Rock wool , PU sandwichMaterial Q235B Q345B China standard steel Sheet 0.5mm or 0.6mm galvanized sheet Prefabricated ...