222121 Artificial guts, of hardened proteins or of cellulosic materials/ tubes, pipes and hoses, rigid, of plastics

22212130 Artificial guts (sausage skins) of hardened protein or cellulosic materials 22212153 Rigid tubes, pipes and hoses of polymers of ethylene 22212155 Rigid tubes, pipes and hoses of polymers of propylene 22212157 Rigid tubes, pipes and hoses of polymers of vinyl chloride 22212170 Rigid tubes, pipes and hoses of plastics (excluding of polymers of ethylene, of polymers of propylene, of polymers of vinyl chloride)