Tubes are coated with polymer materials such as PVF, nylon, and epoxy。
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.
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
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.