Section 07 PLASTICS AND ARTICLES THEREOF; RUBBER AND ARTICLES THEREOF 39 Plastics and articles thereof 39 17 Tubes, pipes and hoses, and fittings therefor (for example, joints, elbows, flan 39 17 10 39 17 10 00 Commodity Code Description 39 17 10 00 00 - Artificial guts (sausage casings) of hardened protein or of cellulosic materials