... material etc. Round welded tube SpecificationsFeatures: 1) Sizes: 9.5mm, 12.7mm, 15.9mm, 17mm, 18mm, 19.1mm, 20mm, 21mm, etc2 ... )Round welded tubes, tube, pipes,Features:1) Sizes: 9.5mm, 12.7mm, 15.9mm, 17mm, 18mm, 19.1mm, 20mm, 21mm, 22 ... steel welded tubes, tube, pipes, pipe, round, circular12)Inner packing: Plastic bag13)Outer packing:according to customers' requests