... Extrusion equipment line. 3.CE,ISO Cold Formed Steel Sections 1. STANDARD:GB/T3094-2000, GB/T6728- ... steel, Seamless steel, Alloy steel.3. SURFACE:Bared, Galvanized, Oiled, Color Paint, 3PE; Or Other Anti-corrosive Treatment.4. TECHINQUE:Hot rolled, Cold rolled ... , road fence, traffic signs.(3).Construction engineering: steel structure construction, sports venue, three-dimensional garage, exhibition ...