... 7.94/Φ7Copper tube with aluminium finR134a≤3.1Used for vehicle and vessel etc transportation devices1. material :copper , aluminum , ... type: louver fin or flat fin or corrugated fin4. copper pipe: diameter 7mm or 8mm or 9.52mmor 12 ... tube bending, punching fin, expanding, digressing, dryingWelding, leakage test, bending, inspection, packingNote: for further information please contact us copper tube ...