Subheading 3917.33 · Section VII
3917.33 Plastics; tubes, pipes and hoses thereof, other than those of item no. 3917.31, not reinforced or otherwise combined with other materials, with fittings
39 Plastics and articles thereof
3917 Tubes, pipes and hoses and fittings thereof (for example, joints, elbows, flanges), of plastics
3917.33 Tubes, pipes and hoses thereof, other than those of item no. 3917.31, not reinforced or otherwise combined with other materials, with fittings
Other subheadings under 3917
3917.10 Artificial guts (sausage casings) of hardened protein or of cellulosic materials 3917.21 Tubes, pipes and hoses thereof, rigid, of polymers of ethylene 3917.22 Tubes, pipes and hoses thereof, rigid, of polymers of propylene 3917.23 Tubes, pipes and hoses thereof, rigid, of polymers of vinyl chloride 3917.29 Tubes, pipes and hoses thereof, rigid, of plastics n.e.c. in heading no. 3917 3917.31 Tubes, pipes and hoses thereof, flexible, having a minimum burst pressure of 27.6MPa 3917.32 Tubes, pipes and hoses thereof, other than those of item no. 3917.31, not reinforced or otherwise combined with other materials, without fittings 3917.39 Tubes, pipes and hoses thereof, n.e.c. in item no. 3917.30 3917.40 Tube, pipe and hose fittings (e.g. joints, elbows, flanges)
For Indian shipping bills you need 8 digits. These six-digit codes are the international HS 2022. India's ITC(HS) classification (DGFT) and Customs Tariff (CBIC) add two more digits for the national tariff line, so pick the 8-digit line under your 6-digit code there, and confirm with your customs broker for anything borderline.