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Harmonized System
Sección XV
BASE METALS AND ARTICLES OF BASE METAL
Notes.
1.‑ This Section does not cover :
(a) Prepared paints, inks or other products with a basis of metallic flakes or powder (headings 32.07 to 32.10, 32.12, 32.13 or 32.15);
(b) Ferro‑cerium or other pyrophoric alloys (heading 36.06);
(c) Headgear or parts thereof of heading 65.06 or 65.07;
(d) Umbrella frames or other articles of heading 66.03;
(e) Goods of Chapter 71 (for example, precious metal alloys, base metal clad with precious metal, imitation jewellery);
(f) Articles of Section XVI (machinery, mechanical appliances and electrical goods);
(g) Assembled railway or tramway track (heading 86.08) or other articles of Section XVII (vehicles, ships and boats, aircraft);
(h) Instruments or apparatus of Section XVIII, including clock or watch springs;
(ij) Lead shot prepared for ammunition (heading 93.06) or other articles of Section XIX (arms and ammunition);
(k) Articles of Chapter 94 (for example, furniture, mattress supports, luminaires and lighting fittings, illuminated signs, prefabricated buildings);
(l) Articles of Chapter 95 (for example, toys, games, sports requisites);
(m) Hand sieves, buttons, pens, pencil-holders, pen nibs, monopods, bipods, tripods and similar articles or other articles of Chapter 96 (miscellaneous manufactured articles); or
(n) Articles of Chapter 97 (for example, works of art).
2.‑ Throughout the Nomenclature, the expression “parts of general use” means :
(a) Articles of heading 73.07, 73.12, 73.15, 73.17 or 73.18 and similar articles of other base metal, other than articles specially designed for use exclusively in implants in medical, surgical, dental or veterinary sciences (heading 90.21);
(b) Springs and leaves for springs, of base metal, other than clock or watch springs (heading 91.14); and
(c) Articles of headings 83.01, 83.02, 83.08, 83.10 and frames and mirrors, of base metal, of heading 83.06.
In Chapters 73 to 76 and 78 to 82 (but not in heading 73.15) references to parts of goods do not include references to parts of general use as defined above.
Subject to the preceding paragraph and to Note 1 to Chapter 83, the articles of Chapter 82 or 83 are excluded from Chapters 72 to 76 and 78 to 81.
3.- Throughout the Nomenclature, the expression “base metals” means : iron and steel, copper, nickel, aluminium, lead, zinc, tin, tungsten (wolfram), molybdenum, tantalum, magnesium, cobalt, bismuth, cadmium, titanium, zirconium, antimony, manganese, beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium (columbium), rhenium and thallium.
4.- Throughout the Nomenclature, the term “cermets” means products containing a microscopic heterogeneous combination of a metallic component and a ceramic component. The term “cermets” includes sintered metal carbides (metal carbides sintered with a metal).
5.‑ Classification of alloys (other than ferro‑alloys and master alloys as defined in Chapters 72 and 74) :
(a) An alloy of base metals is to be classified as an alloy of the metal which predominates by weight over each of the other metals;
(b) An alloy composed of base metals of this Section and of elements not falling within this Section is to be treated as an alloy of base metals of this Section if the total weight of such metals equals or exceeds the total weight of the other elements present;
(c) In this Section the term “alloys” includes sintered mixtures of metal powders, heterogeneous intimate mixtures obtained by melting (other than cermets) and intermetallic compounds.
6.‑ Unless the context otherwise requires, any reference in the Nomenclature to a base metal includes a reference to alloys which, by virtue of Note 5 above, are to be classified as alloys of that metal.
7.‑ Classification of composite articles :
Except where the headings otherwise require, articles of base metal (including articles of mixed materials treated as articles of base metal under the General Interpretative Rules) containing two or more base metals are to be treated as articles of the base metal predominating by weight over each of the other metals.
For this purpose :
(a) Iron and steel, or different kinds of iron or steel, are regarded as one and the same metal;
(b) An alloy is regarded as being entirely composed of that metal as an alloy of which, by virtue of Note 5, it is classified; and
(c) A cermet of heading 81.13 is regarded as a single base metal.
8.‑ In this Section, the following expressions have the meanings hereby assigned to them :
(a) Waste and scrap
(i) All metal waste and scrap;
(ii) Metal goods definitely not usable as such because of breakage, cutting up, wear or other reasons.
(b) Powders
Products of which 90 % or more by weight passes through a sieve having a mesh aperture of 1 mm.
9.- For the purposes of Chapters 74 to 76 and 78 to 81, the following expressions have the meanings hereby assigned to them :
(a) Bars and rods
Rolled, extruded, drawn or forged products, not in coils, which have a uniform solid cross-section along their whole length in the shape of circles, ovals, rectangles (including squares), equilateral triangles or regular convex polygons (including “flattened circles” and “modified rectangles”, of which two opposite sides are convex arcs, the other two sides being straight, of equal length and parallel). Products with a rectangular (including square), triangular or polygonal cross-section may have corners rounded along their whole length. The thickness of such products which have a rectangular (including “modified rectangular”) cross-section exceeds one-tenth of the width. The expression also covers cast or sintered products, of the same forms and dimensions, which have been subsequently worked after production (otherwise than by simple trimming or de-scaling), provided that they have not thereby assumed the character of articles or products of other headings.
Wire-bars and billets of Chapter 74 with their ends tapered or otherwise worked simply to facilitate their entry into machines for converting them into, for example, drawing stock (wire-rod) or tubes, are however to be taken to be unwrought copper of heading 74.03. This provision applies mutatis mutandis to the products of Chapter 81.
(b) Profiles
Rolled, extruded, drawn, forged or formed products, coiled or not, of a uniform cross-section along their whole length, which do not conform to any of the definitions of bars, rods, wire, plates, sheets, strip, foil, tubes or pipes. The expression also covers cast or sintered products, of the same forms, which have been subsequently worked after production (otherwise than by simple trimming or de-scaling), provided that they have not thereby assumed the character of articles or products of other headings.
(c) Wire
Rolled, extruded or drawn products, in coils, which have a uniform solid cross-section along their whole length in the shape of circles, ovals, rectangles (including squares), equilateral triangles or regular convex polygons (including “flattened circles” and “modified rectangles”, of which two opposite sides are convex arcs, the other two sides being straight, of equal length and parallel). Products with a rectangular (including square), triangular or polygonal cross-section may have corners rounded along their whole length. The thickness of such products which have a rectangular (including “modified rectangular”) cross-section exceeds one-tenth of the width.
(d) Plates, sheets, strip and foil
Flat-surfaced products (other than the unwrought products), coiled or not, of solid rectangular (other than square) cross-section with or without rounded corners (including “modified rectangles” of which two opposite sides are convex arcs, the other two sides being straight, of equal length and parallel) of a uniform thickness, which are :
- of rectangular (including square) shape with a thickness not exceeding one-tenth of the width;
- of a shape other than rectangular or square, of any size, provided that they do not assume the character of articles or products of other headings.
Headings for plates, sheets, strip, and foil apply, inter alia, to plates, sheets, strip, and foil with patterns (for example, grooves, ribs, chequers, tears, buttons, lozenges) and to such products which have been perforated, corrugated, polished or coated, provided that they do not thereby assume the character of articles or products of other headings.
(e) Tubes and pipes
Hollow products, coiled or not, which have a uniform cross-section with only one enclosed void along their whole length in the shape of circles, ovals, rectangles (including squares), equilateral triangles or regular convex polygons, and which have a uniform wall thickness. Products with a rectangular (including square), equilateral triangular or regular convex polygonal cross-section, which may have corners rounded along their whole length, are also to be considered as tubes and pipes provided the inner and outer cross-sections are concentric and have the same form and orientation. Tubes and pipes of the foregoing cross-sections may be polished, coated, bent, threaded, drilled, waisted, expanded, cone-shaped or fitted with flanges, collars or rings.
Capítulo 72
Iron and steel
Notes.
1.‑ In this Chapter and, in the case of Notes (d), (e) and (f) throughout the Nomenclature, the following expressions have the meanings hereby assigned to them :
(a) Pig iron
Iron‑carbon alloys not usefully malleable, containing more than 2 % by weight of carbon and which may contain by weight one or more other elements within the following limits :
‑ not more than 10 % of chromium
‑ not more than 6 % of manganese
‑ not more than 3 % of phosphorus
‑ not more than 8 % of silicon
‑ a total of not more than 10 % of other elements.
(b) Spiegeleisen
Iron‑carbon alloys containing by weight more than 6 % but not more than 30 % of manganese and otherwise conforming to the specification at (a) above.
(c) Ferro‑alloys
Alloys in pigs, blocks, lumps or similar primary forms, in forms obtained by continuous casting and also in granular or powder forms, whether or not agglomerated, commonly used as an additive in the manufacture of other alloys or as de‑oxidants, de‑sulphurising agents or for similar uses in ferrous metallurgy and generally not usefully malleable, containing by weight 4 % or more of the element iron and one or more of the following :
‑ more than 10 % of chromium
‑ more than 30 % of manganese
‑ more than 3 % of phosphorus
‑ more than 8 % of silicon
‑ a total of more than 10 % of other elements, excluding carbon, subject to a maximum content of 10 % in the case of copper.
(d) Steel
Ferrous materials other than those of heading 72.03 which (with the exception of certain types produced in the form of castings) are usefully malleable and which contain by weight 2 % or less of carbon. However, chromium steels may contain higher proportions of carbon.
(e) Stainless steel
Alloy steels containing, by weight, 1.2 % or less of carbon and 10.5 % or more of chromium, with or without other elements.
(f) Other alloy steel
Steels not complying with the definition of stainless steel and containing by weight one or more of the following elements in the proportion shown :
‑ 0.3 % or more of aluminium
‑ 0.0008 % or more of boron
‑ 0.3 % or more of chromium
‑ 0.3 % or more of cobalt
‑ 0.4 % or more of copper
‑ 0.4 % or more of lead
‑ 1.65 % or more of manganese
‑ 0.08 % or more of molybdenum
‑ 0.3 % or more of nickel
‑ 0.06 % or more of niobium
‑ 0.6 % or more of silicon
‑ 0.05 % or more of titanium
‑ 0.3 % or more of tungsten (wolfram)
‑ 0.1 % or more of vanadium
‑ 0.05 % or more of zirconium
‑ 0.1 % or more of other elements (except sulphur, phosphorus, carbon and nitrogen), taken separately.
(g) Remelting scrap ingots of iron or steel
Products roughly cast in the form of ingots without feeder‑heads or hot tops, or of pigs, having obvious surface faults and not complying with the chemical composition of pig iron, spiegeleisen or ferro‑alloys.
(h) Granules
Products of which less than 90 % by weight passes through a sieve with a mesh aperture of 1 mm and of which 90 % or more by weight passes through a sieve with a mesh aperture of 5 mm.
(ij) Semi‑finished products
Continuous cast products of solid section, whether or not subjected to primary hot‑rolling; and Other products of solid section, which have not been further worked than subjected to primary hot‑rolling or roughly shaped by forging, including blanks for angles, shapes or sections.
These products are not presented in coils.
(k) Flat‑rolled products
Rolled products of solid rectangular (other than square) cross‑section, which do not conform to the definition at (ij) above in the form of :
‑ coils of successively superimposed layers, or
‑ straight lengths, which if of a thickness less than 4.75 mm are of a width measuring at least ten times the thickness or if of a thickness of 4.75 mm or more are of a width which exceeds 150 mm and measures at least twice the thickness.
Flat‑rolled products include those with patterns in relief derived directly from rolling (for example, grooves, ribs, chequers, tears, buttons, lozenges) and those which have been perforated, corrugated or polished, provided that they do not thereby assume the character of articles or products of other headings.
Flat‑rolled products of a shape other than rectangular or square, of any size, are to be classified as products of a width of 600 mm or more, provided that they do not assume the character of articles or products of other headings.
(l) Bars and rods, hot-rolled, in irregularly wound coils
Hot-rolled products in irregularly wound coils, which have a solid cross-section in the shape of circles, segments of circles, ovals, rectangles (including squares), triangles or other convex polygons (including “flattened circles” and “modified rectangles”, of which two opposite sides are convex arcs, the other two sides being straight, of equal length and parallel). These products may have indentations, ribs, grooves or other deformations produced during the rolling process (reinforcing bars and rods).
(m) Other bars and rods
Products which do not conform to any of the definitions at (ij), (k) or (l) above or to the definition of wire, which have a uniform solid cross-section along their whole length in the shape of circles, segments of circles, ovals, rectangles (including squares), triangles or other convex polygons (including “flattened circles” and “modified rectangles”, of which two opposite sides are convex arcs, the other two sides being straight, of equal length and parallel). These products may :
- have indentations, ribs, grooves or other deformations produced during the rolling process (reinforcing bars and rods);
- be twisted after rolling.
(n) Angles, shapes and sections
Products having a uniform solid cross‑section along their whole length which do not conform to any of the definitions at (ij), (k), (l) or (m) above or to the definition of wire.
Chapter 72 does not include products of heading 73.01 or 73.02.
(o) Wire
Cold‑formed products in coils, of any uniform solid cross‑section along their whole length, which do not conform to the definition of flat‑rolled products.
(p) Hollow drill bars and rods
Hollow bars and rods of any cross‑section, suitable for drills, of which the greatest external dimension of the cross‑section exceeds 15 mm but does not exceed 52 mm, and of which the greatest internal dimension does not exceed one half of the greatest external dimension. Hollow bars and rods of iron or steel not conforming to this definition are to be classified in heading 73.04.
2.‑ Ferrous metals clad with another ferrous metal are to be classified as products of the ferrous metal predominating by weight.
3.‑ Iron or steel products obtained by electrolytic deposition, by pressure casting or by sintering are to be classified, according to their form, their composition and their appearance, in the headings of this Chapter appropriate to similar hot‑rolled products.
Subheading Notes.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Alloy pig iron
Pig iron containing, by weight, one or more of the following elements in the specified proportions :
‑ more than 0.2 % of chromium
‑ more than 0.3 % of copper
‑ more than 0.3 % of nickel
‑ more than 0.1 % of any of the following elements : aluminium, molybdenum, titanium, tungsten (wolfram), vanadium.
(b) Non‑alloy free‑cutting steel
Non‑alloy steel containing, by weight, one or more of the following elements in the specified proportions :
‑ 0.08 % or more of sulphur
‑ 0.1 % or more of lead
‑ more than 0.05 % of selenium
‑ more than 0.01 % of tellurium
‑ more than 0.05 % of bismuth.
(c) Silicon‑electrical steel
Alloy steels containing by weight at least 0.6 % but not more than 6 % of silicon and not more than 0.08 % of carbon. They may also contain by weight not more than 1 % of aluminium but no other element in a proportion that would give the steel the characteristics of another alloy steel.
(d) High speed steel
Alloy steels containing, with or without other elements, at least two of the three elements molybdenum, tungsten and vanadium with a combined content by weight of 7 % or more, 0.6 % or more of carbon and 3 to 6 % of chromium.
(e) Silico‑manganese steel
Alloy steels containing by weight :
- not more than 0.7 % of carbon,
- 0.5 % or more but not more than 1.9 % of manganese, and
- 0.6 % or more but not more than 2.3 % of silicon, but no other element in a proportion that would give the steel the characteristics of another alloy steel.
2.‑ For the classification of ferro-alloys in the subheadings of heading 72.02 the following rule should be observed :
A ferro‑alloy is considered as binary and classified under the relevant subheading (if it exists) if only one of the alloy elements exceeds the minimum percentage laid down in Chapter Note 1 (c); by analogy, it is considered respectively as ternary or quaternary if two or three alloy elements exceed the minimum percentage.
For the application of this rule the unspecified “other elements” referred to in Chapter Note 1 (c) must each exceed 10 % by weight.
Capítulo 73
Articles of iron or steel
Notes.
1.‑ In this Chapter the expression “cast iron” applies to products obtained by casting in which iron predominates by weight over each of the other elements and which do not comply with the chemical composition of steel as defined in Note 1 (d) to Chapter 72.
2.‑ In this Chapter the word “wire” means hot or cold‑formed products of any cross‑sectional shape, of which no cross‑sectional dimension exceeds 16 mm.
Capítulo 74
Copper and articles thereof
Note.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Refined copper
Metal containing at least 99.85 % by weight of copper; or
Metal containing at least 97.5 % by weight of copper, provided that the content by weight of any other element does not exceed the limit specified in the following table :
TABLE ‑ Other elements
|
Element |
Limiting content % by weight |
|
Ag Silver As Arsenic Cd Cadmium Cr Chromium Mg Magnesium Pb Lead S Sulphur Sn Tin Te Tellurium Zn Zinc Zr Zirconium Other elements*, each |
0.25 0.5 1.3 1.4 0.8 1.5 0.7 0.8 0.8 1 0.3 0.3 |
* Other elements are, for example, Al, Be, Co, Fe, Mn, Ni, Si.
(b) Copper alloys
Metallic substances other than unrefined copper in which copper predominates by weight over each of the other elements, provided that :
(i) the content by weight of at least one of the other elements is greater than the limit specified in the foregoing table; or
(ii) the total content by weight of such other elements exceeds 2.5 %.
(c) Master alloys
Alloys containing with other elements more than 10 % by weight of copper, not usefully malleable and commonly used as an additive in the manufacture of other alloys or as de‑oxidants, de‑sulphurising agents or for similar uses in the metallurgy of non‑ferrous metals. However, copper phosphide (phosphor copper) containing more than 15 % by weight of phosphorus falls in heading 28.53.
Subheading Note.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Copper‑zinc base alloys (brasses)
Alloys of copper and zinc, with or without other elements. When other elements are present :
‑ zinc predominates by weight over each of such other elements;
‑ any nickel content by weight is less than 5 % (see copper‑nickel‑zinc alloys (nickel silvers)); and
‑ any tin content by weight is less than 3 % (see copper‑tin alloys (bronzes)).
(b) Copper‑tin base alloys (bronzes)
Alloys of copper and tin, with or without other elements. When other elements are present, tin predominates by weight over each of such other elements, except that when the tin content is 3 % or more the zinc content by weight may exceed that of tin but must be less than 10 %.
(c) Copper‑nickel‑zinc base alloys (nickel silvers)
Alloys of copper, nickel and zinc, with or without other elements. The nickel content is 5 % or more by weight (see copper‑zinc alloys (brasses)).
(d) Copper‑nickel base alloys
Alloys of copper and nickel, with or without other elements but in any case containing by weight not more than 1 % of zinc. When other elements are present, nickel predominates by weight over each of such other elements.
Capítulo 75
Nickel and articles thereof
Subheading Notes.
1.- In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Nickel, not alloyed
Metal containing by weight at least 99 % of nickel plus cobalt, provided that :
(i) the cobalt content by weight does not exceed 1.5 %, and
(ii) the content by weight of any other element does not exceed the limit specified in the following table :
TABLE ‑ Other elements
|
Element |
Limiting content % by weight |
|
Fe Iron O Oxygen Other elements, each |
0.5 0.4 0.3 |
(b) Nickel alloys
Metallic substances in which nickel predominates by weight over each of the other elements provided that :
(i) the content by weight of cobalt exceeds 1.5 %,
(ii) the content by weight of at least one of the other elements is greater than the limit specified in the foregoing table, or
(iii) the total content by weight of elements other than nickel plus cobalt exceeds 1 %.
2.- Notwithstanding the provisions of Note 9 (c) to Section XV, for the purposes of subheading 7508.10 the term “wire” applies only to products, whether or not in coils, of any cross-sectional shape, of which no cross-sectional dimension exceeds 6 mm.
Capítulo 76
Aluminium and articles thereof
Subheading Notes.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Aluminium, not alloyed
Metal containing by weight at least 99 % of aluminium, provided that the content by weight of any other element does not exceed the limit specified in the following table :
TABLE ‑ Other elements
|
Element |
Limiting content % by weight |
|
Fe + Si (iron plus silicon) Other elements(1), each |
1 0.1(2) |
|
(1) Other elements are, for example Cr, Cu, Mg, Mn, Ni, Zn. (2) Copper is permitted in a proportion greater than 0.1 % but not more than 0.2 %, provided that neither the chromium nor manganese content exceeds 0.05 %. |
|
(b) Aluminium alloys
Metallic substances in which aluminium predominates by weight over each of the other elements, provided that :
(i) the content by weight of at least one of the other elements or of iron plus silicon taken together is greater than the limit specified in the foregoing table; or
(ii) the total content by weight of such other elements exceeds 1 %.
2.- Notwithstanding the provisions of Note 9 (c) to the Section XV, for the purposes of subheading 7616.91 the term “wire” applies only to products, whether or not in coils, of any cross-sectional shape, of which no cross-sectional dimension exceeds 6 mm.
Capítulo 77
(Reserved for possible future use in the Harmonized System)
Capítulo 78
Lead and articles thereof
Subheading Note.
1.‑ In this Chapter the expression “refined lead” means :
Metal containing by weight at least 99.9 % of lead, provided that the content by weight of any other element does not exceed the limit specified in the following table :
TABLE ‑ Other elements
|
Element |
Limiting content % by weight |
|
Ag Silver As Arsenic Bi Bismuth Ca Calcium Cd Cadmium Cu Copper Fe Iron S Sulphur Sb Antimony Sn Tin Zn Zinc Other (for example Te), each |
0.02 0.005 0.05 0.002 0.002 0.08 0.002 0.002 0.005 0.005 0.002 0.001 |
Capítulo 79
Zinc and articles thereof
Subheading Note.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Zinc, not alloyed
Metal containing by weight at least 97.5 % of zinc.
(b) Zinc alloys
Metallic substances in which zinc predominates by weight over each of the other elements, provided that the total content by weight of such other elements exceeds 2.5 %.
(c) Zinc dust
Dust obtained by condensation of zinc vapour, consisting of spherical particles which are finer than zinc powders. At least 80 % by weight of the particles pass through a sieve with 63 micrometres (microns) mesh. It must contain at least 85 % by weight of metallic zinc.
Capítulo 80
Tin and articles thereof
Subheading Note.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Tin, not alloyed
Metal containing by weight at least 99 % of tin, provided that the content by weight of any bismuth or copper is less than the limit specified in the following table :
TABLE ‑ Other elements
|
Element |
Limiting content % by weight |
|
Bi Bismuth Cu Copper |
0.1 0.4 |
(b) Tin alloys
Metallic substances in which tin predominates by weight over each of the other elements, provided that :
(i) the total content by weight of such other elements exceeds 1 %; or
(ii) the content by weight of either bismuth or copper is equal to or greater than the limit
(iii) specified in the foregoing table.
Capítulo 81
Other base metals; cermets; articles thereof
Capítulo 82
Tools, implements, cutlery, spoons and forks, of base metal; parts thereof of base metal
Notes.
1.‑ Apart from blow lamps, portable forges, grinding wheels with frameworks, manicure or pedicure sets, and goods of heading 82.09, this Chapter covers only articles with a blade, working edge, working surface or other working part of :
(a) Base metal;
(b) Metal carbides or cermets;
(c) Precious or semi‑precious stones (natural, synthetic or reconstructed) on a support of base metal, metal carbide or cermet; or
(d) Abrasive materials on a support of base metal, provided that the articles have cutting teeth, flutes, grooves, or the like, of base metal, which retain their identity and function after the application of the abrasive.
2.‑ Parts of base metal of the articles of this Chapter are to be classified with the articles of which they are parts, except parts separately specified as such and tool‑holders for hand tools (heading 84.66). However parts of general use as defined in Note 2 to Section XV are in all cases excluded from this Chapter.
Heads, blades and cutting plates for electric shavers and electric hair clippers are to be classified in heading 85.10.
3.‑ Sets consisting of one or more knives of heading 82.11 and at least an equal number of articles of heading 82.15 are to be classified in heading 82.15.
Capítulo 83
Miscellaneous articles of base metal
Notes.
1.‑ For the purposes of this Chapter, parts of base metal are to be classified with their parent articles. However, articles of iron or steel of heading 73.12, 73.15, 73.17, 73.18 or 73.20, or similar articles of other base metal (Chapters 74 to 76 and 78 to 81) are not to be taken as parts of articles of this Chapter.
2.‑ For the purposes of heading 83.02, the word “castors” means those having a diameter (including, where appropriate, tyres) not exceeding 75 mm, or those having a diameter (including, where appropriate, tyres) exceeding 75 mm provided that the width of the wheel or tyre fitted thereto is less than 30 mm.
Sección XV
BASE METALS AND ARTICLES OF BASE METAL
Notes.
1.‑ This Section does not cover :
(a) Prepared paints, inks or other products with a basis of metallic flakes or powder (headings 32.07 to 32.10, 32.12, 32.13 or 32.15);
(b) Ferro‑cerium or other pyrophoric alloys (heading 36.06);
(c) Headgear or parts thereof of heading 65.06 or 65.07;
(d) Umbrella frames or other articles of heading 66.03;
(e) Goods of Chapter 71 (for example, precious metal alloys, base metal clad with precious metal, imitation jewellery);
(f) Articles of Section XVI (machinery, mechanical appliances and electrical goods);
(g) Assembled railway or tramway track (heading 86.08) or other articles of Section XVII (vehicles, ships and boats, aircraft);
(h) Instruments or apparatus of Section XVIII, including clock or watch springs;
(ij) Lead shot prepared for ammunition (heading 93.06) or other articles of Section XIX (arms and ammunition);
(k) Articles of Chapter 94 (for example, furniture, mattress supports, luminaires and lighting fittings, illuminated signs, prefabricated buildings);
(l) Articles of Chapter 95 (for example, toys, games, sports requisites);
(m) Hand sieves, buttons, pens, pencil-holders, pen nibs, monopods, bipods, tripods and similar articles or other articles of Chapter 96 (miscellaneous manufactured articles); or
(n) Articles of Chapter 97 (for example, works of art).
2.‑ Throughout the Nomenclature, the expression “parts of general use” means :
(a) Articles of heading 73.07, 73.12, 73.15, 73.17 or 73.18 and similar articles of other base metal, other than articles specially designed for use exclusively in implants in medical, surgical, dental or veterinary sciences (heading 90.21);
(b) Springs and leaves for springs, of base metal, other than clock or watch springs (heading 91.14); and
(c) Articles of headings 83.01, 83.02, 83.08, 83.10 and frames and mirrors, of base metal, of heading 83.06.
In Chapters 73 to 76 and 78 to 82 (but not in heading 73.15) references to parts of goods do not include references to parts of general use as defined above.
Subject to the preceding paragraph and to Note 1 to Chapter 83, the articles of Chapter 82 or 83 are excluded from Chapters 72 to 76 and 78 to 81.
3.- Throughout the Nomenclature, the expression “base metals” means : iron and steel, copper, nickel, aluminium, lead, zinc, tin, tungsten (wolfram), molybdenum, tantalum, magnesium, cobalt, bismuth, cadmium, titanium, zirconium, antimony, manganese, beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium (columbium), rhenium and thallium.
4.- Throughout the Nomenclature, the term “cermets” means products containing a microscopic heterogeneous combination of a metallic component and a ceramic component. The term “cermets” includes sintered metal carbides (metal carbides sintered with a metal).
5.‑ Classification of alloys (other than ferro‑alloys and master alloys as defined in Chapters 72 and 74) :
(a) An alloy of base metals is to be classified as an alloy of the metal which predominates by weight over each of the other metals;
(b) An alloy composed of base metals of this Section and of elements not falling within this Section is to be treated as an alloy of base metals of this Section if the total weight of such metals equals or exceeds the total weight of the other elements present;
(c) In this Section the term “alloys” includes sintered mixtures of metal powders, heterogeneous intimate mixtures obtained by melting (other than cermets) and intermetallic compounds.
6.‑ Unless the context otherwise requires, any reference in the Nomenclature to a base metal includes a reference to alloys which, by virtue of Note 5 above, are to be classified as alloys of that metal.
7.‑ Classification of composite articles :
Except where the headings otherwise require, articles of base metal (including articles of mixed materials treated as articles of base metal under the General Interpretative Rules) containing two or more base metals are to be treated as articles of the base metal predominating by weight over each of the other metals.
For this purpose :
(a) Iron and steel, or different kinds of iron or steel, are regarded as one and the same metal;
(b) An alloy is regarded as being entirely composed of that metal as an alloy of which, by virtue of Note 5, it is classified; and
(c) A cermet of heading 81.13 is regarded as a single base metal.
8.‑ In this Section, the following expressions have the meanings hereby assigned to them :
(a) Waste and scrap
(i) All metal waste and scrap;
(ii) Metal goods definitely not usable as such because of breakage, cutting up, wear or other reasons.
(b) Powders
Products of which 90 % or more by weight passes through a sieve having a mesh aperture of 1 mm.
9.- For the purposes of Chapters 74 to 76 and 78 to 81, the following expressions have the meanings hereby assigned to them :
(a) Bars and rods
Rolled, extruded, drawn or forged products, not in coils, which have a uniform solid cross-section along their whole length in the shape of circles, ovals, rectangles (including squares), equilateral triangles or regular convex polygons (including “flattened circles” and “modified rectangles”, of which two opposite sides are convex arcs, the other two sides being straight, of equal length and parallel). Products with a rectangular (including square), triangular or polygonal cross-section may have corners rounded along their whole length. The thickness of such products which have a rectangular (including “modified rectangular”) cross-section exceeds one-tenth of the width. The expression also covers cast or sintered products, of the same forms and dimensions, which have been subsequently worked after production (otherwise than by simple trimming or de-scaling), provided that they have not thereby assumed the character of articles or products of other headings.
Wire-bars and billets of Chapter 74 with their ends tapered or otherwise worked simply to facilitate their entry into machines for converting them into, for example, drawing stock (wire-rod) or tubes, are however to be taken to be unwrought copper of heading 74.03. This provision applies mutatis mutandis to the products of Chapter 81.
(b) Profiles
Rolled, extruded, drawn, forged or formed products, coiled or not, of a uniform cross-section along their whole length, which do not conform to any of the definitions of bars, rods, wire, plates, sheets, strip, foil, tubes or pipes. The expression also covers cast or sintered products, of the same forms, which have been subsequently worked after production (otherwise than by simple trimming or de-scaling), provided that they have not thereby assumed the character of articles or products of other headings.
(c) Wire
Rolled, extruded or drawn products, in coils, which have a uniform solid cross-section along their whole length in the shape of circles, ovals, rectangles (including squares), equilateral triangles or regular convex polygons (including “flattened circles” and “modified rectangles”, of which two opposite sides are convex arcs, the other two sides being straight, of equal length and parallel). Products with a rectangular (including square), triangular or polygonal cross-section may have corners rounded along their whole length. The thickness of such products which have a rectangular (including “modified rectangular”) cross-section exceeds one-tenth of the width.
(d) Plates, sheets, strip and foil
Flat-surfaced products (other than the unwrought products), coiled or not, of solid rectangular (other than square) cross-section with or without rounded corners (including “modified rectangles” of which two opposite sides are convex arcs, the other two sides being straight, of equal length and parallel) of a uniform thickness, which are :
- of rectangular (including square) shape with a thickness not exceeding one-tenth of the width;
- of a shape other than rectangular or square, of any size, provided that they do not assume the character of articles or products of other headings.
Headings for plates, sheets, strip, and foil apply, inter alia, to plates, sheets, strip, and foil with patterns (for example, grooves, ribs, chequers, tears, buttons, lozenges) and to such products which have been perforated, corrugated, polished or coated, provided that they do not thereby assume the character of articles or products of other headings.
(e) Tubes and pipes
Hollow products, coiled or not, which have a uniform cross-section with only one enclosed void along their whole length in the shape of circles, ovals, rectangles (including squares), equilateral triangles or regular convex polygons, and which have a uniform wall thickness. Products with a rectangular (including square), equilateral triangular or regular convex polygonal cross-section, which may have corners rounded along their whole length, are also to be considered as tubes and pipes provided the inner and outer cross-sections are concentric and have the same form and orientation. Tubes and pipes of the foregoing cross-sections may be polished, coated, bent, threaded, drilled, waisted, expanded, cone-shaped or fitted with flanges, collars or rings.
Capítulo 72
Iron and steel
Notes.
1.‑ In this Chapter and, in the case of Notes (d), (e) and (f) throughout the Nomenclature, the following expressions have the meanings hereby assigned to them :
(a) Pig iron
Iron‑carbon alloys not usefully malleable, containing more than 2 % by weight of carbon and which may contain by weight one or more other elements within the following limits :
‑ not more than 10 % of chromium
‑ not more than 6 % of manganese
‑ not more than 3 % of phosphorus
‑ not more than 8 % of silicon
‑ a total of not more than 10 % of other elements.
(b) Spiegeleisen
Iron‑carbon alloys containing by weight more than 6 % but not more than 30 % of manganese and otherwise conforming to the specification at (a) above.
(c) Ferro‑alloys
Alloys in pigs, blocks, lumps or similar primary forms, in forms obtained by continuous casting and also in granular or powder forms, whether or not agglomerated, commonly used as an additive in the manufacture of other alloys or as de‑oxidants, de‑sulphurising agents or for similar uses in ferrous metallurgy and generally not usefully malleable, containing by weight 4 % or more of the element iron and one or more of the following :
‑ more than 10 % of chromium
‑ more than 30 % of manganese
‑ more than 3 % of phosphorus
‑ more than 8 % of silicon
‑ a total of more than 10 % of other elements, excluding carbon, subject to a maximum content of 10 % in the case of copper.
(d) Steel
Ferrous materials other than those of heading 72.03 which (with the exception of certain types produced in the form of castings) are usefully malleable and which contain by weight 2 % or less of carbon. However, chromium steels may contain higher proportions of carbon.
(e) Stainless steel
Alloy steels containing, by weight, 1.2 % or less of carbon and 10.5 % or more of chromium, with or without other elements.
(f) Other alloy steel
Steels not complying with the definition of stainless steel and containing by weight one or more of the following elements in the proportion shown :
‑ 0.3 % or more of aluminium
‑ 0.0008 % or more of boron
‑ 0.3 % or more of chromium
‑ 0.3 % or more of cobalt
‑ 0.4 % or more of copper
‑ 0.4 % or more of lead
‑ 1.65 % or more of manganese
‑ 0.08 % or more of molybdenum
‑ 0.3 % or more of nickel
‑ 0.06 % or more of niobium
‑ 0.6 % or more of silicon
‑ 0.05 % or more of titanium
‑ 0.3 % or more of tungsten (wolfram)
‑ 0.1 % or more of vanadium
‑ 0.05 % or more of zirconium
‑ 0.1 % or more of other elements (except sulphur, phosphorus, carbon and nitrogen), taken separately.
(g) Remelting scrap ingots of iron or steel
Products roughly cast in the form of ingots without feeder‑heads or hot tops, or of pigs, having obvious surface faults and not complying with the chemical composition of pig iron, spiegeleisen or ferro‑alloys.
(h) Granules
Products of which less than 90 % by weight passes through a sieve with a mesh aperture of 1 mm and of which 90 % or more by weight passes through a sieve with a mesh aperture of 5 mm.
(ij) Semi‑finished products
Continuous cast products of solid section, whether or not subjected to primary hot‑rolling; and Other products of solid section, which have not been further worked than subjected to primary hot‑rolling or roughly shaped by forging, including blanks for angles, shapes or sections.
These products are not presented in coils.
(k) Flat‑rolled products
Rolled products of solid rectangular (other than square) cross‑section, which do not conform to the definition at (ij) above in the form of :
‑ coils of successively superimposed layers, or
‑ straight lengths, which if of a thickness less than 4.75 mm are of a width measuring at least ten times the thickness or if of a thickness of 4.75 mm or more are of a width which exceeds 150 mm and measures at least twice the thickness.
Flat‑rolled products include those with patterns in relief derived directly from rolling (for example, grooves, ribs, chequers, tears, buttons, lozenges) and those which have been perforated, corrugated or polished, provided that they do not thereby assume the character of articles or products of other headings.
Flat‑rolled products of a shape other than rectangular or square, of any size, are to be classified as products of a width of 600 mm or more, provided that they do not assume the character of articles or products of other headings.
(l) Bars and rods, hot-rolled, in irregularly wound coils
Hot-rolled products in irregularly wound coils, which have a solid cross-section in the shape of circles, segments of circles, ovals, rectangles (including squares), triangles or other convex polygons (including “flattened circles” and “modified rectangles”, of which two opposite sides are convex arcs, the other two sides being straight, of equal length and parallel). These products may have indentations, ribs, grooves or other deformations produced during the rolling process (reinforcing bars and rods).
(m) Other bars and rods
Products which do not conform to any of the definitions at (ij), (k) or (l) above or to the definition of wire, which have a uniform solid cross-section along their whole length in the shape of circles, segments of circles, ovals, rectangles (including squares), triangles or other convex polygons (including “flattened circles” and “modified rectangles”, of which two opposite sides are convex arcs, the other two sides being straight, of equal length and parallel). These products may :
- have indentations, ribs, grooves or other deformations produced during the rolling process (reinforcing bars and rods);
- be twisted after rolling.
(n) Angles, shapes and sections
Products having a uniform solid cross‑section along their whole length which do not conform to any of the definitions at (ij), (k), (l) or (m) above or to the definition of wire.
Chapter 72 does not include products of heading 73.01 or 73.02.
(o) Wire
Cold‑formed products in coils, of any uniform solid cross‑section along their whole length, which do not conform to the definition of flat‑rolled products.
(p) Hollow drill bars and rods
Hollow bars and rods of any cross‑section, suitable for drills, of which the greatest external dimension of the cross‑section exceeds 15 mm but does not exceed 52 mm, and of which the greatest internal dimension does not exceed one half of the greatest external dimension. Hollow bars and rods of iron or steel not conforming to this definition are to be classified in heading 73.04.
2.‑ Ferrous metals clad with another ferrous metal are to be classified as products of the ferrous metal predominating by weight.
3.‑ Iron or steel products obtained by electrolytic deposition, by pressure casting or by sintering are to be classified, according to their form, their composition and their appearance, in the headings of this Chapter appropriate to similar hot‑rolled products.
Subheading Notes.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Alloy pig iron
Pig iron containing, by weight, one or more of the following elements in the specified proportions :
‑ more than 0.2 % of chromium
‑ more than 0.3 % of copper
‑ more than 0.3 % of nickel
‑ more than 0.1 % of any of the following elements : aluminium, molybdenum, titanium, tungsten (wolfram), vanadium.
(b) Non‑alloy free‑cutting steel
Non‑alloy steel containing, by weight, one or more of the following elements in the specified proportions :
‑ 0.08 % or more of sulphur
‑ 0.1 % or more of lead
‑ more than 0.05 % of selenium
‑ more than 0.01 % of tellurium
‑ more than 0.05 % of bismuth.
(c) Silicon‑electrical steel
Alloy steels containing by weight at least 0.6 % but not more than 6 % of silicon and not more than 0.08 % of carbon. They may also contain by weight not more than 1 % of aluminium but no other element in a proportion that would give the steel the characteristics of another alloy steel.
(d) High speed steel
Alloy steels containing, with or without other elements, at least two of the three elements molybdenum, tungsten and vanadium with a combined content by weight of 7 % or more, 0.6 % or more of carbon and 3 to 6 % of chromium.
(e) Silico‑manganese steel
Alloy steels containing by weight :
- not more than 0.7 % of carbon,
- 0.5 % or more but not more than 1.9 % of manganese, and
- 0.6 % or more but not more than 2.3 % of silicon, but no other element in a proportion that would give the steel the characteristics of another alloy steel.
2.‑ For the classification of ferro-alloys in the subheadings of heading 72.02 the following rule should be observed :
A ferro‑alloy is considered as binary and classified under the relevant subheading (if it exists) if only one of the alloy elements exceeds the minimum percentage laid down in Chapter Note 1 (c); by analogy, it is considered respectively as ternary or quaternary if two or three alloy elements exceed the minimum percentage.
For the application of this rule the unspecified “other elements” referred to in Chapter Note 1 (c) must each exceed 10 % by weight.
Capítulo 73
Articles of iron or steel
Notes.
1.‑ In this Chapter the expression “cast iron” applies to products obtained by casting in which iron predominates by weight over each of the other elements and which do not comply with the chemical composition of steel as defined in Note 1 (d) to Chapter 72.
2.‑ In this Chapter the word “wire” means hot or cold‑formed products of any cross‑sectional shape, of which no cross‑sectional dimension exceeds 16 mm.
Capítulo 74
Copper and articles thereof
Note.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Refined copper
Metal containing at least 99.85 % by weight of copper; or
Metal containing at least 97.5 % by weight of copper, provided that the content by weight of any other element does not exceed the limit specified in the following table :
TABLE ‑ Other elements
|
Element |
Limiting content % by weight |
|
Ag Silver As Arsenic Cd Cadmium Cr Chromium Mg Magnesium Pb Lead S Sulphur Sn Tin Te Tellurium Zn Zinc Zr Zirconium Other elements*, each |
0.25 0.5 1.3 1.4 0.8 1.5 0.7 0.8 0.8 1 0.3 0.3 |
* Other elements are, for example, Al, Be, Co, Fe, Mn, Ni, Si.
(b) Copper alloys
Metallic substances other than unrefined copper in which copper predominates by weight over each of the other elements, provided that :
(i) the content by weight of at least one of the other elements is greater than the limit specified in the foregoing table; or
(ii) the total content by weight of such other elements exceeds 2.5 %.
(c) Master alloys
Alloys containing with other elements more than 10 % by weight of copper, not usefully malleable and commonly used as an additive in the manufacture of other alloys or as de‑oxidants, de‑sulphurising agents or for similar uses in the metallurgy of non‑ferrous metals. However, copper phosphide (phosphor copper) containing more than 15 % by weight of phosphorus falls in heading 28.53.
Subheading Note.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Copper‑zinc base alloys (brasses)
Alloys of copper and zinc, with or without other elements. When other elements are present :
‑ zinc predominates by weight over each of such other elements;
‑ any nickel content by weight is less than 5 % (see copper‑nickel‑zinc alloys (nickel silvers)); and
‑ any tin content by weight is less than 3 % (see copper‑tin alloys (bronzes)).
(b) Copper‑tin base alloys (bronzes)
Alloys of copper and tin, with or without other elements. When other elements are present, tin predominates by weight over each of such other elements, except that when the tin content is 3 % or more the zinc content by weight may exceed that of tin but must be less than 10 %.
(c) Copper‑nickel‑zinc base alloys (nickel silvers)
Alloys of copper, nickel and zinc, with or without other elements. The nickel content is 5 % or more by weight (see copper‑zinc alloys (brasses)).
(d) Copper‑nickel base alloys
Alloys of copper and nickel, with or without other elements but in any case containing by weight not more than 1 % of zinc. When other elements are present, nickel predominates by weight over each of such other elements.
Capítulo 75
Nickel and articles thereof
Subheading Notes.
1.- In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Nickel, not alloyed
Metal containing by weight at least 99 % of nickel plus cobalt, provided that :
(i) the cobalt content by weight does not exceed 1.5 %, and
(ii) the content by weight of any other element does not exceed the limit specified in the following table :
TABLE ‑ Other elements
|
Element |
Limiting content % by weight |
|
Fe Iron O Oxygen Other elements, each |
0.5 0.4 0.3 |
(b) Nickel alloys
Metallic substances in which nickel predominates by weight over each of the other elements provided that :
(i) the content by weight of cobalt exceeds 1.5 %,
(ii) the content by weight of at least one of the other elements is greater than the limit specified in the foregoing table, or
(iii) the total content by weight of elements other than nickel plus cobalt exceeds 1 %.
2.- Notwithstanding the provisions of Note 9 (c) to Section XV, for the purposes of subheading 7508.10 the term “wire” applies only to products, whether or not in coils, of any cross-sectional shape, of which no cross-sectional dimension exceeds 6 mm.
Capítulo 76
Aluminium and articles thereof
Subheading Notes.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Aluminium, not alloyed
Metal containing by weight at least 99 % of aluminium, provided that the content by weight of any other element does not exceed the limit specified in the following table :
TABLE ‑ Other elements
|
Element |
Limiting content % by weight |
|
Fe + Si (iron plus silicon) Other elements(1), each |
1 0.1(2) |
|
(1) Other elements are, for example Cr, Cu, Mg, Mn, Ni, Zn. (2) Copper is permitted in a proportion greater than 0.1 % but not more than 0.2 %, provided that neither the chromium nor manganese content exceeds 0.05 %. |
|
(b) Aluminium alloys
Metallic substances in which aluminium predominates by weight over each of the other elements, provided that :
(i) the content by weight of at least one of the other elements or of iron plus silicon taken together is greater than the limit specified in the foregoing table; or
(ii) the total content by weight of such other elements exceeds 1 %.
2.- Notwithstanding the provisions of Note 9 (c) to the Section XV, for the purposes of subheading 7616.91 the term “wire” applies only to products, whether or not in coils, of any cross-sectional shape, of which no cross-sectional dimension exceeds 6 mm.
Capítulo 77
(Reserved for possible future use in the Harmonized System)
Capítulo 78
Lead and articles thereof
Subheading Note.
1.‑ In this Chapter the expression “refined lead” means :
Metal containing by weight at least 99.9 % of lead, provided that the content by weight of any other element does not exceed the limit specified in the following table :
TABLE ‑ Other elements
|
Element |
Limiting content % by weight |
|
Ag Silver As Arsenic Bi Bismuth Ca Calcium Cd Cadmium Cu Copper Fe Iron S Sulphur Sb Antimony Sn Tin Zn Zinc Other (for example Te), each |
0.02 0.005 0.05 0.002 0.002 0.08 0.002 0.002 0.005 0.005 0.002 0.001 |
Capítulo 79
Zinc and articles thereof
Subheading Note.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Zinc, not alloyed
Metal containing by weight at least 97.5 % of zinc.
(b) Zinc alloys
Metallic substances in which zinc predominates by weight over each of the other elements, provided that the total content by weight of such other elements exceeds 2.5 %.
(c) Zinc dust
Dust obtained by condensation of zinc vapour, consisting of spherical particles which are finer than zinc powders. At least 80 % by weight of the particles pass through a sieve with 63 micrometres (microns) mesh. It must contain at least 85 % by weight of metallic zinc.
Capítulo 80
Tin and articles thereof
Subheading Note.
1.‑ In this Chapter the following expressions have the meanings hereby assigned to them :
(a) Tin, not alloyed
Metal containing by weight at least 99 % of tin, provided that the content by weight of any bismuth or copper is less than the limit specified in the following table :
TABLE ‑ Other elements
|
Element |
Limiting content % by weight |
|
Bi Bismuth Cu Copper |
0.1 0.4 |
(b) Tin alloys
Metallic substances in which tin predominates by weight over each of the other elements, provided that :
(i) the total content by weight of such other elements exceeds 1 %; or
(ii) the content by weight of either bismuth or copper is equal to or greater than the limit
(iii) specified in the foregoing table.
Capítulo 81
Other base metals; cermets; articles thereof
Capítulo 82
Tools, implements, cutlery, spoons and forks, of base metal; parts thereof of base metal
Notes.
1.‑ Apart from blow lamps, portable forges, grinding wheels with frameworks, manicure or pedicure sets, and goods of heading 82.09, this Chapter covers only articles with a blade, working edge, working surface or other working part of :
(a) Base metal;
(b) Metal carbides or cermets;
(c) Precious or semi‑precious stones (natural, synthetic or reconstructed) on a support of base metal, metal carbide or cermet; or
(d) Abrasive materials on a support of base metal, provided that the articles have cutting teeth, flutes, grooves, or the like, of base metal, which retain their identity and function after the application of the abrasive.
2.‑ Parts of base metal of the articles of this Chapter are to be classified with the articles of which they are parts, except parts separately specified as such and tool‑holders for hand tools (heading 84.66). However parts of general use as defined in Note 2 to Section XV are in all cases excluded from this Chapter.
Heads, blades and cutting plates for electric shavers and electric hair clippers are to be classified in heading 85.10.
3.‑ Sets consisting of one or more knives of heading 82.11 and at least an equal number of articles of heading 82.15 are to be classified in heading 82.15.
Capítulo 83
Miscellaneous articles of base metal
Notes.
1.‑ For the purposes of this Chapter, parts of base metal are to be classified with their parent articles. However, articles of iron or steel of heading 73.12, 73.15, 73.17, 73.18 or 73.20, or similar articles of other base metal (Chapters 74 to 76 and 78 to 81) are not to be taken as parts of articles of this Chapter.
2.‑ For the purposes of heading 83.02, the word “castors” means those having a diameter (including, where appropriate, tyres) not exceeding 75 mm, or those having a diameter (including, where appropriate, tyres) exceeding 75 mm provided that the width of the wheel or tyre fitted thereto is less than 30 mm.