Section 07 PLASTICS AND ARTICLES THEREOF; RUBBER AND ARTICLES THEREOF 39 PLASTICS AND ATRICLES THEREOF 39 17 TUBES, PIPES AND HOSES, AND FITTINGS THEREOF (FOR EXAMPLE, JOINTS, ELBOWS, 39 17 10 ARTIFICIAL GUTS (SAUSAGE CASINGS) OF HARDENED PROTEIN OR OF CELLULOSIC MAT Commodity Code Description 39 17 10 00 ARTIFICIAL GUTS (SAUSAGE CASINGS) OF HARDENED PROTEIN OR OF CELLULOSIC MAT