NOTE :
In this Chapter, 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 crosssection 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 crosssection may have corners rounded along their whole length. The thickness of such products which have a rectangular (including "modified rectangular") crosssection exceeds onetenth 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 descaling), provided that they have not thereby assumed the character of articles or products of other headings.
(b) Profiles
Rolled, extruded, drawn, forged or formed products, coiled or not, of a uniform crosssection 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 descaling), 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 crosssection 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 crosssection may have corners rounded along their whole length. The thickness of such products which have a rectangular (including "modified rectangular") crosssection exceeds one tenth of the width
(d) Plates, sheets, strip and foil
Flatsurfaced products (other than the unwrought products of heading 8001), coiled or not, of solid rectangular (other than square) crosssection 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:
(i) of rectangular (including square) shape with a thickness not exceeding onetenth of the width;
(ii) 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.
(e) Tubes and pipes
Hollow products, coiled or not, which have a uniform crosssection 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 crosssection, which may have corners rounded along their whole length, are also to be considered as tubes and pipes provided the inner and outer crosssections are concentric and have the same form and orientation. Tubes and pipes of the foregoing crosssections may be polished, coated, bent, threaded, drilled, waisted, expanded, coneshaped or fitted with flanges, collars or rings
SUBHEADING NOTE :
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 
0.1 
Cu 
COPPER 
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 specified in the foregoing table