11
Sanitary; Drying installations; Rainwater collectors of plastic for fitting in drainpipes; Underground and overground rainwater filters, not of metal; Small clarifying installations, not of metal; Sewage purification installations; Filters [parts of household or industrial installations]; Seepage filters; Throttle devices of plastic for regulating water drainage; Seepage filters for water seepage; Fittings of plastic for connecting plastic tanks and rainwater collection tanks
17
Filtering materials (semi-processed materials or foams of plastic); Joint packings; Grommets made of rubber; Clack valves of rubber; Flexible tubes, not of metal; Barriers (Floating anti-pollution -); Valves of india-rubber or vulcanized fiber [fibre]; Pipe jackets, not of metal; Junctions, not of metal, for flexible pipes; None of the aforesaid goods in the form of adhesives, fillers, caulking materials, paints, coatings or goods for fire protection
19
Gutter pipes, not of metal; Branching pipes, not of metal; Seepage wells, water seepage containers and seepage lines; Tanks of masonry; Drain pipes, not of metal; Penstock pipes, not of metal; Rigid pipes, not of metal [building]; Water-pipes, not of metal; Buildings, transportable, not of metal; Infiltration trenches (buffer tanks for water), not of metal; Seepage wells, not of metal; Seepage tunnels, not of metal; Maintenance and inspection shafts, not of metal; Filter shafts, not of metal; Manhole covers, not of metal; Ventilation covers of plastic; Drainage panels of plastic
20
Containers and tanks of plastic; Seepage tanks, not of metal; Non-metallic storage and transport containers; Rain barrels and rainwater butts, not of metal; Rainwater collection tanks, not of metal; Containers, not of metal, for collecting recycling waste; Waste water collection tanks, not of metal; Barrels for beverages, not of metal; Containers of plastic for apparatus construction, namely stackable containers, Containers; Multi-purpose and grit containers of plastic; Multi-purpose containers for stacking, storage and collecting, not of metal; Containers of plastic for use in industry, trade; Internal valves of plastic for water pipes or drainpipes; Floating containers, not of metal