Binding thread of metal; Clips of metal for cables and pipes; Collars of metal for fastening pipes; Elbows of metal for pipes; Junctions of metal for pipes; Metal pipes; Metal tubes; Reinforcing materials of metal for pipes; Steel pipes; Steel pipes and tubes; Steel tubes; Tubes of metal; Water-pipe valves of metal; Metal flanges; Metal pipe connectors; Metal pipe muffs; Metal pipe fittings; Screw rings of metal