... Q235, Q275, Q345, 20#, 45#, Stainless steel, Seamless steel, Alloy steel.3. SURFACE:Bared, Galvanized, Oiled, Color Paint, 3PE; Or Other Anti ... expressway, overpass, road fence, traffic signs.(3).Construction engineering: steel structure construction, sports venue, three-dimensional garage, exhibition hall.( ... G 3466, DIN EN10210, GB/T178-2005, GB/T 3094-2000 and GB/T6728-2002.Our products in different ...