III.23Tungsten, tungsten carbide and alloys containing more than 90 % tungsten by weight

– Having both of the following characteristics:(i) In forms with a hollow cylindrical symmetry (including cylinder segments) with an inside diameter between 100 and 300 mm; and(ii) A mass greater than 20 kg.– Does not apply to manufactures specially designed as weights or gamma-ray collimators– Excluding materials for the fabrication of 'missiles' components (complete rocket systems and unmanned aerial vehicle systems capable of a range exceeding 300 km), as follows:(i) Tungsten and tungsten alloys in particulate form with a tungsten content of 97 % by weight or more and a particle size of 50 × 10-6 m (50 μm) or less.(ii) Tungsten materials in solid form having all of the following:+ Any of the following material compositions: tungsten and alloys containing 97 % by weight or more of tungsten; copper infiltrated tungsten containing 80 % by weight or more of tungsten; or silver infiltrated tungsten containing 80 % by weight or more of tungsten; and+ Able to be machined to any of the following products: cylinders having a diameter of 120 mm or greater and a length of 50 mm or greater; tubes having a diameter of 65 mm or greater and a wall thickness of 25 mm or greater and a length of 50 mm or greater; or blocks having a size of 120 mm × 120 mm × 50 mm or greater