1)blackor galvanized as customized 2)48.3mm diameter 3)thickness-2.75mm,3.0mm,3.2mm 4)length-0.6m,0.9m,1.2m,6m 5)Q235 1)blackor galvanized as customized2)48.3mm diameter3)thickness-2.75mm,3.0mm,3.2mm4)length-0.6m,0.9m,1.2m,6mpls contact jane by sales1 at yanshunchina dot com dot cn