... ,BS EN10025,BS EN10297,BS6323, BSEN10219,BSEN10217,GB/T13793-1992,GB/T14291-2006, GB/T3091-1993,GB/T3092-1993,GB3640-88UsageMachinery, metallurgy industry, automobile ... and flange also can be supplied.Pictures For your reference 80*200*12mm galvanized/hot dipped galvanized square/rectangular steel tube ...