Metal pipes and metal fittings therefor; Metal hardware, namely, double-end swivels; Metal thread adapters for use with hydraulic and pneumatic systems; Metal manifolds for use with hydraulic and pneumatic systems; Metal adapters for use with hydraulic and pneumatic systems; Metal nipples; Valves of metal, other than parts of machines; Metal connectors for pipes; Rotating junctions of metal for pipes; Containers of metal for liquid fuel