Metal pipe fittings for rigid pipes; Metal pipe fittings for compressed air pipes; Metal pipes and metal fittings therefor; Metal hose fittings; Tubes of stainless steel; Valves of metal other than parts of machines including those from alloy steel and titanium; Metal couplings for use with hydraulic and pneumatic systems; Elbows of metal for pipes including those from alloy steel and titanium; Stainless steels; Steel pipes and tubes