Harmonized System

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Section XV > Chapter 73 > Heading 7302

Explanatory notes

… spaced transverse rods; the spaces between these rods are designed to engage the teeth of the cogged wheel beneath the … with the cogged wheel.        All the above rails may be straight, curved or drilled with bolt holes. (2)   Switch … of the rail to them.        The heading also covers other rigid railway rail fixing devices , such as those obtained …

Section II > Chapter 13 > Heading 1301

Explanatory notes

… are the following : (A)  Stick lac , usually consisting of twigs on which the lac has been deposited in a more or less thick layer; it is dark red and the most highly coloured variety of lac. (B)   Seed lac , the crushed … or less completely on the application of heat, and when ignited burn with a smoky flame and characteristic odour. …

Section VI > Chapter 28 > Heading 2843

Explanatory notes

… oxides . Disilver oxide (Ag 2 O) is a brownish‑black powder slightly soluble in water, turning black on exposure to … dichromate (Ag 2 Cr 2 O 7 ) a crystalline ruby‑red powder, slightly soluble in water; used for painting miniatures …

Section XIII > Chapter 69 > Heading 6906

Explanatory notes

… This heading applies to non-refractory piping, etc., designed, as a general rule, to interlock and to be used for … of fluids. They may be of any shape or section (straight, curved, branched, of constant or varying diameter, … pipes, conduit tubing to protect electric cables but not designed to act as insulators, half tubes in the form of …

Section XVI > Chapter 85 > Heading 8549

Explanatory notes

… reuse or repurposing to render them fit for their original purpose or for subsequent use .  Simply being used … scrap remain classified in this heading. The expression “original purpose”, in Note 6 to Section XVI, refers to …

Section XVII > Chapter 89 > Heading 8903

Explanatory notes

… boats and canoes (+).               ‑ Inflatable (including rigid hull inflatable) boats : 8903.11 ‑ ‑ Fitted or designed to be fitted with a motor, unladen (net) weight (excluding the motor) not exceeding 100 kg 8903.12 ‑ …

Section XV > Chapter 73 > Heading 7318

Explanatory notes

… for metal are cylindrical in shape, with a close and only slightly inclined thread; they are rarely pointed, and may have slotted heads or heads adapted for tightening with a spanner or they may be recessed. A bolt is designed to engage in a nut, whereas screws for metal are …

Section VI > Chapter 28 > Heading 2853

Explanatory notes

… alloys of copper only if they contain more than 15 % by weight of phosphorus. Under this limit they fall generally … on contact with water, give off hydrogen phosphides which ignite spontaneously. Used with calcium carbide for naval signals (self‑igniting flares for buoys). (3)   Zinc phosphide (Zn 3 P 2 …

Section XV > Chapter 83 > Heading 8303

Explanatory notes

… metal. This heading covers containers and strong‑room doors designed for securing valuables, jewels, documents, etc., … containers of which the walls are armoured (i.e., made of high‑strength alloy steel) or of sheet steel reinforced … They are fitted with very secure locks and often with air‑tight doors and double walls, the intervening space usually …