Ducts and Round, Square and/or Rectangular Section Accessories, from gauge 24 steel up to 1/4 " of thickness, Dust Aspiration Systems, Pneumatic Transport, Extraction and Absorption Bells, Cyclones and/or Separators, Valves and Gates of drive by Pinion and Chain for Manual and Motorised Operation, floodgates, Distributors of one or more entering and with several exits with circular and/or rectangular section, for manual and/or motorised operation, Hoppers in all the sizes and capacities.