Elbows of metal for pipes; Fittings of metal for pipes; Fittings of metal for rigid pipes; Furniture fittings of metal; Junctions of metal for rigid pipes; Metal caps for tubes; Metal elbows for pipes; Metal flanges; Metal nipples; Metal pipe connectors; Metal pipe couplings and joints; Metal pipe fittings; Metal pipe supports; Metal pipes; Metal pipes and metal fittings therefor; Metal pipes and tubes; Metal plugs; Metal tubes; Metal tubes for industrial use; Metal tubing; Metal tubs; Metall...