6 pipes, tubes, couplings, fastenings and fittings for use in connection with pipes or tubes, namely nuts, sleeves, caps, tubes, plugs, joints, threaded coupling components, and olives, all made of metal
17 instruments for manipulating pipes, tubes, couplings, fastenings and fittings for use in connection with pipes and tubes, namely plastic enclosures for couplings, nonmetallic pipe gaskets and collars, nonmetallic covers and nonmetallic caps