Galvanized Square Tube 1).W.T:0.5-6.0mm 2).O.D:20-165mm 3).length:4-14m. TypePre-galvanized square/Galvanized Square TubeSpecification15*15-100 ... , ASTM A53 , BS1387-1985MaterialQ195,Q215,Q235,Q345Zinc-coating60-120g/Pre square metterPackingStandard export packing or as requestProductivity6000T/MOthers1.The product uses ...