Elbows of metal for pipes; Metal adapters for use with hydraulic and pneumatic systems; Metal drain pipes; Metal elbows for pipes; Metal hose fittings; Metal junctions for pipes; Metal manifolds for use with hydraulic and pneumatic systems; Metal pipe connectors; Metal pipe fittings; Metal pipe fittings for compressed air pipes; Metal pipes and tubes; Pipe coupling of metal; Stainless steel pipes; Valves of metal, other than parts of machines; Common metals and their alloys including stainles...