Largely used by ACR industries for heat exchangers/compressors.
Bundy tubes (double wall copper brazed steel tubing) of different surface finishes, such as original copper plating, zinc plating, PVF coating, Nylon coating, and also epoxy coating.
Double wall copper brazed (Bundy welded) steel tube, outside diameter 15.88mm (i.e. 5/8″).
Single wall or double wall Bundy tube zinc plated, trivalent chromated to colorful appearance.
Now have plenty of stock of 7×0.7mm Bundy tubes, with copper coated both inside and outside, ASTM A254 7×0.7mm Bundy Welded (Brazed) OD 7mm Wall 0.7mm
SAE J527 defines the standard specifications for double walled steel tubing (copper brazed).
Double wall copper brazed steel tubing of 4mm OD and different wall thickness, cold drawn from 4.76mm OD and annealed.
Double wall brazed steel tubing (Bundy tube) zinc plated, chromate treated to dark green (olive green color) to further enhance corrosion resistance.
Extra annealed to soft condition, to replace copper tubes used in ACR compressors
Tube: Bundy welded steel pipe OD: 8mm Wall: 0.7mm Surface Finish: original copper plating inside and outside