Metallic pipes and metallic tubes, none being boiler tubes or parts of machines; joints, union pieces, couplings and parts included in Class 6, all made of common metal and for pipes and tubes; clips, pipe nozzles and valves and parts of valves, all made of common metal, and all included in Class 6

Joints, union pieces and couplings, all for pipes and for tubes; valves and parts of all such goods; pipes, tubes and nozzles; all included in Class 17 and made of rubber, of synthetic rubber or of plastics; non-metallic hose pipes