Goods of common metal, included in this class; containers of metal; closures of metal for containers; vats of metal; nozzles of metal; casks of metal; taps of metal for casks; hoppers of metal, other than parts of machines; clacks of metal, other than parts of machines; pipes of metal; pipe supports of metal; piping anchorages of metal; pipe mouldings of metal; elbows of metal for pipes; pipework of metal; pipe muffs of metal; collars of metal for fastening pipes; tension clamps of metal for ...