... SM490,ASTM A572; Q235B=S235JR,SS400,ASTM A36 Carbon structural steel: Q195, Q215, Q235, Q255, Q275, etc.High-strength ... home,sandwich panel, welded H steel,C/Z channel,corrugated steel sheet,etc.Steel structure design rules: "Steel Design Code" (GB50017-2003)" ... built-up welded H-section , hot-rolled H-section, channel, steel column, steel beam),standard frames, secondary framing, roof & wall materials ...