Taojun
The Science of Reliability: Why 8mm Bundy Tubes Define Performance
Bundy tube, also known as double-walled brazed steel tubing, is the gold standard for refrigeration circuits and automotive brake lines. The 8mm specification is particularly critical as it offers the optimal balance between refrigerant flow velocity and heat exchange surface area. In high-performance cooling systems, the wall thickness and the quality of the copper coating (typically 0.003mm internal/external) determine the tube's resistance to corrosion and its ability to withstand vibration fatigue.
At Ningbo Taojun, our manufacturing process involves rolling a copper-coated steel strip twice through 720 degrees, followed by a continuous brazing process in a controlled atmosphere furnace. This results in a tube that is essentially seamless in its structural integrity but with the cost-efficiency of steel. This "Information Gain" in our production line—focusing on hydrogen embrittlement resistance—is what sets us apart from generic wholesalers.
