Harmonized System

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Section V > Chapter 25 > Heading 2523

Explanatory notes

… and accelerators to modify its hydraulic properties. The principal types of Portland cement are normal Portland … (ground blast furnace slag mixed with an accelerator and calcined gypsum), pozzolana cement, Roman cement, etc., and … clinker with the possible addition of a small quantity of calcium sulphate. It is to be noted : ‑    that Portland …

Section XVIII > Chapter 90 > Heading 9026

Explanatory notes

… and accessories Apart from instruments or apparatus more specifically covered by other headings of the Nomenclature, such as : (a) Pressure‑reducing valves and thermostatically controlled valves ( … closed conduits (piping, etc.). Some flowmeters use the principle of the fluid meters of heading 90.28 …

Section XVI > Chapter 84 > Heading 8401

Explanatory notes

… control rods , of materials with a high neutron absorption capacity (e.g., boron, cadmium, hafnium) or of alloys or …

Section XV > Chapter 72 > Heading 7202

Explanatory notes

… alloying elements to steel or pig iron in order to obtain special qualities, generally in those cases where the use of … they are more usually prepared in electric furnaces, or in crucibles by the “ thermit ” process, etc. The principal varieties are : (1)   Ferro‑manganese (2)   …

Section XIII > Chapter 70 > Heading 7009

Explanatory notes

… dilute ammoniacal solution of silver nitrate (mixed with a reducing solution based on potassium sodium tartrate or … of pearl, tortoise-shell, etc.). Mirrors designed for placing on the floor or ground (for example, cheval-glasses … (b)   Mirrors the mounts or frames of which contain precious metal or metal clad with precious metal, whether or …

Section XV > Chapter 73 > Heading 7304

Explanatory notes

… stainless steel 7304.29 - - Other               - Other, of circular cross-section, of iron or non-alloy steel : 7304.31 … casting. This process of manufacture includes : (1) Piercing in a cross rolling mill (Mannesmann process), in a … the blank in a series of rolls or       ‑   in a stretch reducing mill. In this case the product obtained is a …

Section XVI > Chapter 84 > Heading 8424

Explanatory notes

… water-abrasive jet cutting machines which are designed for precise cutting of a variety of materials (e.g., stone, … a stream of water or water mixed with fine abrasives, at a velocity of 2 to 3 times the speed of sound ( heading 84.56 … extinguishers, filled or not, of the kind which use foam‑producing or other charges, including simple extinguishers …

Section I > Chapter 3 > Heading 0303

Explanatory notes

… (red salmon) ( Oncorhynchus nerka ) 0303.12 - - Other Pacific salmon ( Oncorhynchus gorbuscha, Oncorhynchus keta, … spp. , Ctenopharyngodon idellus , Hypophthalmichthys spp ., Cirrhinus spp ., Mylopharyngodon piceus, Catla catla, Labeo … Bothidae, Cynoglossidae, Soleidae, Scophthalmidae and Citharidae ), excluding edible fish offal of …

Section V > Chapter 27 > Heading 2713

Explanatory notes

… minerals.               - Petroleum coke : 2713.11 - - Not calcined 2713.12 - - Calcined 2713.20 - Petroleum bitumen … or black and may be soft or brittle. It is used for road‑surfacing, waterproofing, etc. Petroleum bitumen which has …

Section V > Chapter 25 > Heading 2513

Explanatory notes

… referred to in other headings of this Chapter . (b)   Precious or semi‑precious stones (e.g., ruby, sapphire) of heading 71.03 . (c)   Artificial abrasives such as artificial corundum ( heading …