Bundy tubes with hot-dip GALFAN coating, also called hot-dip zinc-aluminum alloy coating, are now used more and more for automotive fluid transferring.
GALFAN is a special metal alloy consisting 5% of aluminum and 95% zinc alloy. It is a perfect material to enhance the corrosion resistance of the Bundy tubes.
| Item | Requirement |
| Composition | 5% aluminum, balance zinc alloy, per ASTM B750 |
| Thickness | 3μm min anywhere on the tube, 15μm averagely |
| Salt Spray Test | 360 hr min |
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