Fittings of metal for compressed air hoses; Fittings of metal for flexible pipes; Fittings of metal for pipes; Fittings of metal for rigid pipes; Metal elbows for pipes; Metal hose fittings; Metal nipples; Metal pipe couplings and joints; Metal pipe fittings; Metal pipe fittings for compressed air pipes; Metal pipes and metal fittings therefor; Metal thread adapters for use with hydraulic and pneumatic systems; Stainless steel strainers used in the commercial preparation of foods, beverages, ...