Two tubes welded toghter,light,elastic,easy to handle,anti-erosion,resistant to fire,and easy to distinguish. Applications: 1) Being widely used in welding machine,architecture and lacquer factory.Characteristics: 1) Two tubes welded toghter,light,elastic,easy to handle,anti-erosion,resistant to fire,and easy to distinguish.Specifications: Metric MeasurementW.P.B.P.WeightAt 23Ltem No.InchI.D.mmO. ...