pipe fittings of metal; metal pipe fittings; fittings of metal for pipes; metal fittings for pipes; metal fittings for flexible pipes; metal fittings for rigid pipes; pipe fittings [junctions] of metal; fittings of metal for flexible pipes; metal tubing and tubing couplings for joining and terminating pipes; fittings of metal for rigid pipes; metal pipes and fittings therefor; metal hose fittings; hose fittings of metal; metal couplings for pipes; metal water pipes; ducts of metal for ventilating installations; winding spools of metal, non-mechanical, for flexible hoses; pipework of metal including those from alloy steel and titanium; elbows made of metal for flexible pipes; pipe elbows of metal; pipe spacers of metal; metallic pipe extensions; water-pipe valves of metal; branching tubes of metal for pipelines; elbows of metal for pipes, including those made from alloy steel and titanium; metal valves for controlling the flow of gases in pipelines; elbows of metal for pipes including those from alloy steel and titanium; metal water-pipe valves; branching pipes of metal; metal pipe extensions; elbows of metal for pipes; metal collars for fastening pipes; metal pipes for liquid and gas transfer; stainless steel pipes; pipes of metal for liquid and gas transfer; metal elbows for flexible pipes; metal pipe junctions; metallic pipes and tubes; pipe extensions of metal; elbows of metal for rigid pipes; metal pipe clamps; metal hoses for plumbing use; pipe collars of metal; pipes of metal; pipes made of metal; pipe clamps of metal; junctions of metal for pipes, including those made from alloy steel and titanium; junctions of metal for pipes; junctions made of metal for pipes; metal pipe couplings and joints; pipe extensions made of metal; pipe junctions made of metal; pipe couplings and joints of metal; tubing and tubing couplings of metal for joining and terminating pipes