1203.
12
(8) With other insulating systems, having a liquid capacity of 250 gallons (946 litres) or more, and specially designed for use with liquid fluorine or for liquefied gases boiling below -338°F. (-200°C), and having an evaporation loss rate of less than 3% per day as determined at an ambient Lemperature of 75°F. (24°C.) and without exposure to direct sunlight;
(c) With other insulating systems designed only for liquid
oxygen, nitrogen or argon-
(i) Fixed storage tanks having a capacity of 500 tons or DIS
(ii) Mobilo equipment having a capacity in excess of 1,200 gallons (4,542 litres) and an evaporation loss rate of less than 1.5% per day as determined at an ambient Lemperature of 75°F. (24°C) without exposure to direct sunlight
GROUP C.
ELECTRICAL AND POWER-GENERATING EQUIPMENT,
Electric vacuum furnaces as follows-
(a) Consumable electrode vacuum are furnaces, not elsewhere
specified, with a capacity in excess of 5 tons;
(b) Skull type vacuum are furnaces;
(c) Electron beam vacuum furnaces;
(d) Induction vacuum furnaces, as follow§-----
() Cold crucible vacuum induction furnaces designed to operate at pressures lower than 0.1 millimetres of mercury
and at temperatures higher than 2,012°F. (1,100°C.);
(f) Other vacuum induction furnaces designed to operate
at temperatures higher than 3,002°F. (1,650°C)
(e) Resistance vacuum furnaces designed to operate at tempera-
tures higher than 3,002°F. (1,650°C) excluding-
() Furnaces for beat treatment-
(1) up to 12 inches (304 millimetres) X 12 inches (304 millimetres) x 12 inches (304 millimetres) (28,320 cubic centimetres), designed for temperatures not higher than 4,172°F. (2,300°C),
(2) up to 600 cubic centimetres, designed for tem- peratures not higher than 4,860°F. (2,700°C.);
||
1205.
1206.
4305.
(ii) Melting furnaces up to 3,200 cubic centimetres designed for temperatures not higher than 4,172°F. (2.300°C);
1352.
[ Specialized parts and controls for the above furnaces.
1351.
1204.
Electron beam equipment, as follows-
1354.
(5) Equipment for the deposition of thin film, the coating of
thin film, or the working thereof;
(a) Welding and/or machining equipment;
(c) Specialized parts for the above equipment,
13
Electrochemical, semi-conductor and radio-active devices, not elsewhere specified, for the direct conversion of chemical, solar or nuclear energy to electrical energy, as follows-
(a) Electrochemical devices, as follows--
(i) Fuel cells (including regenerative cells), i.e. cells for generating plectric power, to which all the consumable components are supplied from outside the cell;
G0) Primary cells having any of the following charac- teristics-
(1) possessing a means of activation and having an open circuit storage life in the unactivated condition, at & temperature of 21°C. of 10 years or more;
(2) capable of operating at temperatures from below -25°C. to above +55°C, including cells and cell assemblica (other than dry cells) possessing self- contained heaters;
(6) Photo-voltaic cells, not elsewhere specified. with a power output of 8 milliwatts or more per square centimetre under 100 milliwatts per square centimetre tungsten (2,800*K} illumination; all gallium arsenide photo-voltaic celly, exclud- ing those having a power output of less than 4 milliwatts measured by the above technique;
(c) Power sources other than nuclear reactors based on radio- active materials systems, excluding those baving a powEI output of less than 0.5 watt in which the ratio of output (in watts) to weight (in pounds) is less than 1 to 2; (d) Specialized parts, components and sub-assemblies of the
above devices.
Electric arc devices, not elsewhere specified, for generating a flow of ionized gas in which the arc column is constricted (except devices wherein the flow of gas is for isolation purposes only and devices of less than 80 kW for cutting, welding, plating and for spraying) equipment incorporating such devices; specially designed parts, accessories and control or lest equipmeat, not elsewhere specified, for such devices.
GROUP D.
GENERAL INDUSTRIAL EQUIPMENT.
Metal rolling mills, not elsewhere specified.
Machinery specially designed for the extrusion of polytetra- fluoroethylene coagulated dispersions, or powders or pasteb derived therefrom, and parts and components therefor.
Cable-making machinery capable of making cable specified poder item 1526, Group F.
Cable-making machinery specially designed for making coaxial cable, as follows-----
(a) machines for applying insulating separators to the inner
conductor of air-spaced coaxial electric cables;