WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
84.17 Industrial or laboratory furnaces and ovens, including incinerators, non-electric. 84 17.10 - Furnaces and ovens for the roasting, melting or other heat-treatment of ores, pyrites or of metals - Bakery ovens, including biscuit ovens 8417.80 - Other 84 17.90 - Parts 8417.20 This heading covers non-electrical industrial or laboratory type furnaces and ovens, designed for the roduction of heat in chambers at high or fair1 hi@ temperatures by the combustion of fuel (eit&a directly in the chamber or in s arate corn ust~onchambers). They are used for the heat treatment (e.g., by roasting, fusion, ca cination or decomposition) of vmous kinds of products which may be placed on the fire-bed, in crucibles, in retorts or on shelves. It also includes steam heated ovens. "P g In certain types (tunnel ovens) the goods to be heat-treated are passed continuously through the oven (e.g., on a conveyor band). The heading includes : (1) Ovens and furnaces for roasting ores or pyrites. (2) Metal-melting b a c e s , including cupolas. (3) Ovens and furnaces for hardening, annealing or similar heat-treatment of metals. (4) Cementation ovens. (5) Bakery ovens, including biscuit ovens. (6) Coke ovens. (7) Wood carbonisation furnaces. (8) Rotary cement ovens and kilns and rotary plaster ovens. (9) Ovens and furnaces used in the glass or ceramic industries, including tunnel ovens. (10) Enamel baking ovens. (1 1) Furnaces specially designed for the melting, sintering or heat processing of fissile materials recovered with a view to recycling, for the separation of irradiated nuclear fuel by pyrometallurgical processes, for burning radioactive graphite or filters, or for firing earthenware or glass containing radioactive slag. (12) Cremation fimaces. (13) Incinerators and similar apparatus specially designed for the burning of waste, etc. The heading excludes furnaces and ovens consisting essentially of refractory or ceramic materials, and also blocks, bricks and similar refiacto or ceramic materials for building or lining furnaces and ovens (Chapter 69), while meta lic structural material is, in general, classified in Section XV. On the other hand, the heading includes made up linings or other integral and specialised ceramic or refractoy parts presented with, and as components of, furnaces or ovens (assembled or not) made mainly of metal. Many industrial furnaces and ovens incorporate equipment for chargin or discharging, for mampulating the doors, covers, hearths or other moving parts, or for ti ting the furnace, etc. Such lifting or handling equipment is to be classified with the furnace or oven provided it forms an integral part thereof; otherwise it is to be classified in heading 84.28. k PARTS Sub'ect to the general provisions regardin the classification of parts (see the General Exp anatory Note to Sect~onXVI), parts of e goods of this heading are also classified here (e.g., oven or furnace doors, dampers, side-shields; observation windows, arches and tuy6res for blast furnaces). I t The heading does not cover : (a) Ovens other than industrial or laboratory types (heading 73.21). (b) Apparatus of heading 84.19, including oil-cracking plant, autoclaves, steamers and drying plant. (c) Converters (heading 84.54). -
1.- This Chapter does not cover : (a) Millstones, grindstones or other articles of Chapter 68; (b) Machinery or appliances (for example, pumps) of ceramic material and ceramic parts of machinery or appliances of any material (Chapter 69); (c) Laboratory glassware (heading 70.17); machinery, appliances or other articles for technical uses or parts thereof, of glass (heading 70.19 or 70.20); (d) Articles of heading 73.21 or 73.22 or similar articles of other base metals (Chapters 74 to 76 or 78 to 81); (e) Vacuum cleaners of heading 85.08; (f) Electro-mechanical domestic appliances of heading 85.09; digital cameras of heading 85.25; (g) Radiators for the articles of Section XVII; or (h) Hand-operated mechanical floor sweepers, not motorised (heading 96.03). 2.- Subject to the operation of Note 3 to Section XVI and subject to Note 11 to this Chapter, a machine or appliance which answers to a description in one or more of the headings 84.01 to 84.24, or heading 84.86 and at the same time to a description in one or more of the headings 84.25 to 84.80 is to be classified under the appropriate heading of the former group or under heading 84.86, as the case may be, and not the latter group. (A) Heading 84.19 does not, however, cover : (i) Germination plant, incubators or brooders (heading 84.36); (ii) Grain dampening machines (heading 84.37); (iii) Diffusing apparatus for sugar juice extraction (heading 84.38);