Non-metal pipe couplings and joints; Fittings, not of metal, for pipes; Synthetic plastic as semi-finished products in form of foils, plates, rods, profiles, hoses, tubes, blocks; Non-metal pipe muffs; Extruded plastic in the form of bars, blocks, pellets, rods, sheets, tubes for use in manufacturing; Flexible pipes, not of metal; Semi-finished injection molded products of plastic for use in a variety of industries; Flexible plastic hoses for use with ventilation systems; Plastic substances, ...