Apparatus for sludge dewatering (installations); Machines for the processing of sludges; biosolids dewatering apparatus; Biosolids thickening machines; Transportable apparatus for sludge dewatering; Apparatus for sludge thickening; sewage sludge dewatering machines; Machine for sludge thickening or dewatering

Metal pipes and tubes; metal pipes and metal fittings therefore; metal junctions for pipes; elbows of metal for pipes; metal pipe collars; metal pipe fittings for compressed air pipes; metal hose fittings

Flexible pipes, not of metal; rubber tubes and pipes; rings of rubber for use as pipe connection seals; pipe gaskets; hydraulic hoses made of rubber

Plug valves made from the following metals, viz: iron, steel, brasses and bronzes, nickel alloy iron and steel, nickel, nickel copper alloys, steel forgings, malleable iron and other non-precious metals and alloys other than aluminium,

Goods of common metal, namely metal rings, tubes, pipes, ducts of metal, elbows for pipes, feeding pieces, breeches pipes, T-pieces, connection pieces, pipe junctions, pipe flanges, adapter pieces, threaded pipes, clips for pipes, pipe muffs, nuts, shell coupling pieces, tie plates, valves and fittings (other than parts of machines); parts of the aforementioned goods of metal; reinforcing materials of metal for pressure pipes