Non-metallic fittings for pipes; Non-metallic couplings for pipes; Reinforcing materials, not of metal, for pipes; Pipe thread tapes for sealing; Compounds for jointing; Pipe connections (non-metallic -) [parts of rigid water pipes]; Junctions, not of metal, for flexible pipes; Joint packings; Flexible tubes, not of metal; Sprinkling pipes (Non-metallic -); Flexible pipes of rubber reinforced with synthetic fabric; Pipes made of synthetic flexible material; Non-metallic underground tubing; Flexible tubes, not of metal; Valves of india-rubber or vulcanized fiber [fibre].;