... Coated Steel Tube 3. Steel brake Bundy Tube 4.copper coated brake Bundy Tube Copper coated steel brake Bundy Tube Copper coated steel ... brake Bundy Tube1,Standard:ASTM,DIN,UNI ... .710.000.712.000.712.700.7 1,Use:automobile brake system2,Standard:ASTM,DIN,UNI,GB3,Material:low carbon steel ...