17 PLASTIC TUBES AND PIPES, PLASTIC CONNECTORS AND FITTINGS FOR TUBES AND PIPES NAMELY, UNIONS, REDUCERS, MALE CONNECTORS, TEES, ELBOWS, PANEL MOUNTS, CAPS, PLUGS, NIPPLES, FERRULE NUTS AND PLUGS, BARB FITTINGS, AND TUBE TO PIPE ADAPTERS, AND TUBE TO BARREL CONNECTORS, ALL FOR GENERAL INDUSTRIAL USE