Class 040
Treatment & Processing of Materials Services
irons and steels; structural steel; steel rods; steel sheets; steel pipes and tubes; metal beams; sheet metal; metal pipes; structural aluminum; handrails of metal; metal pickets; metal hardware, namely, metal scrolls, rosettes, brackets, finials, newel posts, door tacks, post caps, base plates, post shoes, hinges, and locks; metal fencing panels and gates