... ).O.D:20-165mm 3).length:4-14m... TypePre-galvanized square/Square Pipe TubeSpecification15*15-100*100mmWall thickness0.5-6.0mmLength4-14mStandardGB ... , ASTM A53 , BS1387-1985MaterialQ195,Q215,Q235,Q345Zinc-coating60-120g/Pre square metterPackingStandard export packing or as requestProductivity6000T/MOthers1.The product uses ...