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, flanges), of plastics. Commodity Code Description 39 17 10 Artificial guts of hardened proteins or cellulosic materials 39 17 21 Of polymers of ethylene 39 17 22 Of polymers of propylene 39 17 23 Of polymers of vinyl chloride 39 17 29 Of other plastics 39 17 31 Flexible tubes, pipes and hoses, with a burst pressure >=27.6mpa 39 17 32 Other, not reinforced or otherwise combined with other materials, without fittings 39 17 33 Other, not reinforcced or otherwise conbined with other materials, with fittings 39 17 39 Other 39 17 40 Fittings