Section 15 BASE METALS AND ARTICLES OF BASE METAL 76 ALUMINIUM AND ARTICLES THEREOF 76 09 ALUMINIUM TUBE OR PIPE FITTING (FOR EXAMPLE, CPUPLING, ELBOWS SLEEVES). 76 09 00 ALUMINIUM TUBE OR PIPE FIITINGS (FOR EXAMPLE, COUPLINGS,ELBOWS,SLEEVES) Commodity Code Description 76 09 00 00 ALUMINIUM TUBE OR PIPE FIITINGS (FOR EXAMPLE, COUPLINGS,ELBOWS,SLEEVES)