... design ,fabricate and install all kinds of steel structure buildings. Steel material: Q345B=S355JR,SM490,ASTM A572; ... sandwich panel, welded H steel,C/Z channel,corrugated steel sheet,etc. Steel structure design rules: "Steel Design Code" (GB50017- ... Specifications: Steel frame: steel beams & column, purline, bracing wall& roof: single steel sheet, EPS sandwich panel, glass wool/rock wool sandwich ...