Elbows of metal for flexible pipes; Elbows of metal for pipes; Elbows of metal for pipes including those from alloy steel and titanium; Manually operated metal valves; Metal adapters for use with hydraulic and pneumatic systems; Metal elbows for pipes; Metal hexagon head bolts; Metal hexes; Metal nipples; Metal pipe connectors; Metal pipe fittings; Metal pipe fittings for compressed air pipes; Metal thread adapters for use with hydraulic and pneumatic systems; Metal valves not being parts of ...