... . Steel brake Bundy Tube 3.Galvanized brake Bundy Tube steel tubes&pipessteel tube galsrectangular steel tube 1.Galvanized Steel Tube 2 ... ,Use:automobile brake system5,Standard:ASTM,DIN,UNI,GB6,Material:low carbon steel tube7,Copper plated or Zinc plated8,Wall thickness ... ,DIN,UNI,GB 2,Copper plated,Zinc plated 3,Material:low carbon steel tube O.D(mm)Thickness(mm)3.180 ...