13 METAL WATER PIPE AND TUBING; PIPE AND TUBE FITTINGS-NAMELY, NIPPLES, ELBOWS, ADAPTERS, COUPLINGS, COMPRESSION NIPPLES, SLEEVES AND NUTS; AND PLUMBING FIXTURES-NAMELY, ESCUTCHEONS, SINK, WATER CLOSET AND LAVATORY VALVES, AND DRAINAGE FITTINGS FOR CONNECTING THE DRAIN OF A SINK OR LAVATORY TO A TRAP