Construction elements made of metal, namely, fabricated metal components for building foundations; Elbows of metal for pipes including those from alloy steel and titanium; Metal concrete construction hardware, namely, load transfer dowels; Metal fasteners, namely, bolts, nails, rivets, screws; Metal manifolds for use with hydraulic and pneumatic systems; Metal pipe fittings; Metal self-aligning demountable snap fasteners consisting of press fasteners and press studs for use in attaching panel...