Fittings of metal for compressed air hoses; Ducts of metal, for central heating installations; Iron wire; Iron slabs; Pipework of metal; Magnet wire, namely, copper or aluminum wire covered with thin insulation for use in the manufacture of electric and electronic apparatus; Metal concrete construction hardware, namely, load transfer dowels; Elbows of metal for pipes including those from alloy steel and titanium; Metal water pipes; Metal marine hardware, namely, thimbles