Skelps; Branching pipes of metal including those from alloy steel and titanium; Branching tubes of metal for pipelines; Furniture fittings of metal; Hardware, namely, metal brackets for general use; Hinges of metal; Junctions of metal for flexible pipes; Manually operated metal valves; Mechanical fastening elements of metal; Metal bolts; Metal castings; Metal clamps; Metal clips for general use; Metal elbows for pipes; Metal fasteners, namely, bolts, nails, rivets, screws; Metal flanges; Meta...