Branching tubes of metal for pipelines; Hardware, namely, metal brackets for general use; 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 flanges; Metal hardware, namely, pulleys; Metal hardware, namely, washers; Metal hose clamps; Metal hose fittings; Metal junctions for pipes; Metal nipples; Metal pipe connectors; Metal pipe supports; Metal pipes and metal fittings t...