... Bundy Tube 4,Use:refrigerator condenser,automobile brake system5,Standard:ASTM,DIN,UNI,GB6,Material:low carbon steel tube7,Copper plated or Zinc ... Tube1,Standard:ASTM,DIN,UNI,GB 2,Copper plated,Zinc plated 3,Material:low carbon steel tube O.D(mm)Thickness(mm)3 ...