... brake Bundy Tube bundy steel tubecopper tube rectangularsquare copper tube 1.Galvanized Steel Tube 2. Steel brake ... ,DIN,UNI,GB6,Material:low carbon steel tube7,Copper plated or Zinc plated8,Wall thickness:0.5mm ... ~0.7mm9Outer diameter:Φ3.18mm~Φ12mm Copper coated steel brake Bundy Tube1,Standard:ASTM,DIN ... ,UNI,GB 2,Copper plated,Zinc plated 3,Material:low carbon steel ...