... .10 years insured 3.professional production team Detail information for 20mm Aluminium Tube 1. Material: Aluminum Alloy 6063 6005 60612. ... Drill hole, stretch bending, milling, welding, fabrication etc.5. Packing: 20mm Aluminium Tube wrapped in plastic film, carton box, wooden crates ... Pipes6. Customized aluminium products for special needs. TechnicalData Certificate Popular 20mm Aluminium Tube