... hangarProduction information:Main Steel:Q345B,Q235B Column & Beam:Welded or Hot rolled H-section Wall & Roof:EPS,Rockwall,PU sandwich,corrugated ... Production information:Main Steel:Q345B,Q235B Column & Beam:Welded or Hot rolled H-section Wall & Roof:EPS,Rockwall,PU sandwich, ... Production information:Main Steel:Q345B,Q235B Column & Beam:Welded or Hot rolled H-section Wall & Roof:EPS,Rockwall,PU sandwich, ...