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 (sausage casings) of hardened protein or of 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, having a minimum burst pressure of 27.6 MPa 39 17 32 Electrical conduits and other piping, of PVC 39 17 33 Garden hose 39 17 39 Other 39 17 40 Fittings