Connectors of metal for pipes; Couplings and joints of metal for pipes; Fittings of metal for compressed air lines; Fittings of metal for pipes; Manually operated metal valves; Metal blind flanges; Metal clips for cables and pipes; Metal couplings for fire hoses; Metal penstock pipes; Metal pipe collars; Metal pipe connectors; Metal pipe fittings; Stainless steel pipes; Valves of metal, other than parts of machines; Water-pipe valves of metal