Non-metal pipes and tubes, namely, [ rubber, ] silicone [, elastomer, thermoplastic ] tubes and pipes; non-metal flexible hoses for use in the food, pharmaceutical, biotechnological, cosmetic, chemical and related general processing industries [ ; non-metal connectors and couplings for non-metal pipes and tubes; non-metal nozzles sold as an integral component of the above non-metal pipes and tubes; non-metal connectors and couplings for use with non-metal flexible hoses that are used in the f...