... structure:Welded steel frame (C channel steel, the square tubes, angle steel),fill 50mm PU,Carrying Capacity is 650kg,the thickness ... structure:Welded steel frame (C channel steel, the square tubes , angle steel),the thickness of Welded steel sheet is 1.2mm ... ,Carrying Capacity is 200kg.2.Wall:EPS sandwich panel:Column: angle iron,140*140,material Q235.3.Doors and windows:compound steel ...