7
Non-metallic and predominately non-metallic pneumatic and hydraulic pipes as machine parts
17
Semi-worked goods made of plastics, namely, semi-processed plastic in the form of sheets, tubes, bars or rods; sealing, packing and insulation materials; partially processed plastics; plastic films and foils for commercial, industrial and consumer use, other than for wrapping; extruded, foamed and cast plastics for general industrial use; non-metallic hoses and plastic tubing for the transport of fluids, particles and parts or for protection purposes; non-metallic and predominantly non-metallic pneumatic and hydraulic hoses and tubing for the transport of fluids; muffs and connectors for the joining of hoses and pipelines, namely, push-in fittings, plug-type connectors, barbed fittings, barbed tubing connectors, male connectors, female connectors, multi-tube connectors, elbows, bulkhead connectors, nipples, T-pieces and couplings made from plastics or made predominately from plastics in combination with other materials for use with pneumatic and hydraulic hoses and tubing for the transport of fluids; component parts of all aforementioned goods
19
Non-metallic and predominately non-metallic pneumatic and hydraulic pipes, not as machine parts, namely, rigid pipes