The Harmonized Commodity Description and Coding System, which is also called Harmonized System (HS) of tariff nomenclature, is a recognized international standardization system to classify products exchanged internationally. The nomenclature foresees 21 sections, subdivided into 96 chapters and in above 5.000 headings and subheadings (representing individual commodities). The HS system has been launched in 1988 and is currently under the supervision of the World Customs Organization (WCO) – an association of over 200 countries that is based in Bruxelles.

 

The HS system defines a serial number for almost any commodity that is traded internationally and is a shared reference among international trading partners exchanging goods on a global scale. In most cases, invoices and packing lists have to report the HS number for the shipped items for Customs and statics. Members of the World Customs Organization (WCO) have agreed to define their tariff schedules (tariffs, duties, customs) on the HS nomenclature. Tariffs are scheduled by HS code and country of import/export.

An HS code is formed of 6-digits: the first two digits refer to the HS Chapter, the second two digits designate the HS heading, the last two digits are related to the HS subheading.

HS codes are used to:

  • Determine customs tariffs
  • Collect international trade statistics
  • Define rules of origin
  • Collect internal taxes
  • Execute trade negotiations (e.g., the WTO schedules of tariff concessions)
  • Define transport tariffs and statistics
  • Monitor and track controlled goods (e.g., wastes, narcotics, chemical weapons, etc.)

The HS code of a product can be looked up here

 

HS FOR PROJECT MATERIALS (PIPES, VALVES, AND FITTINGS)

In the table below, we have collected the most used HS codes for piping products as:

  • HS codes for pipes and tubes in various materials (plastic and steel)
  • HS codes for flanges
  • HS codes for fittings
  • HS codes for valves
  • HS codes for gaskets
  • HS codes for stud bolts
CATEGORY TYPE HS CODE DESCRIPTION
PIPES HS CODES PLASTIC PIPES AND TUBES 3917 Tubes, pipes and hoses and fittings thereof (for example, joints, elbows, flanges), of plastics
391721 Plastics; tubes, pipes, and hoses thereof, rigid, of polymers of ethylene
391722 Plastics; tubes, pipes, and hoses thereof, rigid, of polymers of propylene
391723 Plastics; tubes, pipes, and hoses thereof, rigid, of polymers of vinyl chloride
391729 Plastics; tubes, pipes, and hoses thereof, rigid, of plastics n.e.c. in heading no. 3917
391731 Plastics; tubes, pipes and hoses thereof, flexible, having a minimum burst pressure of 27.6MPa
391732 Plastics; tubes, pipes and hoses thereof, other than those of item no. 3917.31, not reinforced or otherwise combined with other materials, without fittings
391733 Plastics; tubes, pipes and hoses thereof, other than those of item no. 3917.31, not reinforced or otherwise combined with other materials, with fittings
391739 Plastics; tubes, pipes and hoses thereof, n.e.c. in item no. 3917.30
PIPES HS CODES CAST IRON PIPES AND TUBES 7303 Tubes, pipes and hollow profiles, of cast iron
730300 Cast iron; tubes, pipes and hollow profiles
PIPES HS CODES SEAMLESS PIPES AND TUBES 7304 Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel
730431 Iron or non-alloy steel (excluding cast iron); seamless, cold-drawn or cold-rolled, tubes, pipes and hollow profiles of circular cross-section
730439 Iron or non-alloy steel (excluding cast iron); seamless, (excluding cold-drawn or cold-rolled), tubes, pipes and hollow profiles of circular cross-section
730441 Steel, stainless; cold-drawn or cold-rolled (cold-reduced), tubes and pipes of circular cross-section
730449 Steel, stainless; (excluding cold-drawn or cold-rolled), tubes pipes and hollow profiles of circular cross-section
730451 Steel, alloy (not stainless steel); seamless, cold-drawn or cold-rolled (cold-reduced), tubes, pipes and hollow profiles of circular cross-section
730459 Steel, alloy (not stainless steel); (excluding cold-drawn or cold-rolled), tubes, pipes and hollow profiles of circular cross-section
730490 Iron or steel (excluding cast iron); seamless, tubes, pipes and hollow profiles, seamless, n.e.c. in heading no. 7304
PIPES HS CODES WELDED PIPES AND TUBES 7305 Iron or steel (excluding cast iron); tubes and pipes (e.g. welded, riveted or similarly closed), having circular cross-sections, the external diameter of which exceeds 406.4mm, not seamless
730531 Iron or steel (excluding cast iron); tubes and pipes (other than line pipe or casing of a kind used for oil or gas pipelines), longitudinally welded, having circular cross-sections, external diameter exceeds 406.4mm, (not seamless)
730539 Iron or steel (excluding cast iron); tubes and pipes (other than line pipe or casing of a kind used for oil or gas pipelines), welded (not longitudinally welded), having circular cross-sections, external diameter exceeds 406.4mm, (not seamless)
730590 Iron or steel (excluding cast iron); tubes and pipes n.e.c. in heading no. 7305, having circular cross-sections, external diameter exceeds 406.4mm, (not seamless)
PIPES HS CODES WELDED PIPES AND TUBES 7306 Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), n.e.c. in chapter 73
730630 Iron or non-alloy steel (excluding cast iron); tubes and pipes (not seamless), welded, of circular cross-section, n.e.c. in chapter 73
730640 Steel, stainless; tubes, pipes and hollow profiles, welded, of circular cross-section, n.e.c. in chapter 73
730650 Steel, alloy; tubes, pipes and hollow profiles (other than stainless steel or seamless), welded, of circular cross-section, n.e.c. in chapter 73
730661 Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), welded, of square or rectangular cross-section, n.e.c. in chapter 73
730669 Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), n.e.c. in chapter 73, welded, of non-circular cross-section (not square or rectangular cross-section)
730690 Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), n.e.c. in chapter 73
PIPES HS CODES COPPER PIPES AND TUBES 7411 Copper tubes and pipes
741110 Copper; tubes and pipes, of refined copper
741121 Copper; tubes and pipes, of copper-zinc base alloys (brass)
741122 Copper; tubes and pipes, of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel silver)
741129 Copper; tubes and pipes, of copper alloys (other than copper-zinc, copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel-silver))
PIPES HS CODES NICKEL ALLOY PIPES AND TUBES 7507 Nickel; tubes, pipes and tube or pipe fittings (e.g. couplings, elbows, sleeves)
750711 Nickel; tubes and pipes, not alloyed
750712 Nickel; tubes and pipes, of nickel alloys
PIPES HS CODES ALUMINIUM PIPES AND TUBES 7608 Aluminium; tubes and pipes
760810 Aluminium; tubes and pipes, not alloyed
760820 Aluminium; tubes and pipes, alloys

 

VALVES HS CODES 8481 Taps, cocks, valves and similar appliances for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves
848110 valves; pressure reducing, for pipes, boiler shells, tanks, vats or the like
848120 valves; for oleo hydraulic or pneumatic transmissions
848130 valves; check (nonreturn) valves, for pipes, boiler shells, tanks, vats or the like
848140 valves; safety or relief valves, for pipes, boiler shells, tanks, vats or the like
848180 Taps, cocks, valves and similar appliances; for pipes, boiler shells, tanks, vats or the like, including thermostatically controlled valves
848190 Taps, cocks, valves and similar appliances; parts thereof
FITTINGS HS CODES / FLANGES HS CODES PLASTIC FITTINGS AND FLANGES 3917 Tubes, pipes and hoses and fittings thereof (for example, joints, elbows, flanges), of plastics
391732 Plastics; tubes, pipes and hoses thereof, other than those of item no. 3917.31, not reinforced or otherwise combined with other materials, without fittings
391733 Plastics; tubes, pipes and hoses thereof, other than those of item no. 3917.31, not reinforced or otherwise combined with other materials, with fittings
391740 Plastics; tube, pipe and hose fittings (e.g. joints, elbows, flanges)
392630 Plastics; fittings for furniture, coachwork or the like
FITTINGS HS CODES / FLANGES HS CODES IRON / STEEL FITTINGS AND FLANGES 7307 Tube or pipe fittings (e.g. couplings, elbows, sleeves), of iron or steel
730711 Cast iron; cast fittings, of non-malleable cast iron
730719 Iron or steel; cast fittings, other than of non-malleable cast iron
730721 Steel, stainless; tube or pipe fittings, flanges, of stainless steel
730722 Steel, stainless; tube or pipe fittings, threaded elbows, bends and sleeves
730723 Steel, stainless; tube or pipe fittings, butt welding fittings
730729 Steel, stainless; tube or pipe fittings, n.e.c. in item no. 7307.2
730791 Iron or steel; tube or pipe fittings, flanges, other than stainless steel
730792 Iron or steel; tube or pipe fittings, threaded elbows, bends and sleeves, other than stainless steel
730793 Iron or steel; tube or pipe fittings, butt welding fittings, other than stainless steel
730799 Iron or steel; tube or pipe fittings, n.e.c. in item no. 7307.9, other than stainless steel
FITTINGS HS CODES / FLANGES HS CODES COPPER FITTINGS AND FLANGES 7412 Copper; tube or pipe fittings (e.g. couplings, elbows, sleeves)
741210 Copper; tube or pipe fittings (e.g. couplings, elbows, sleeves) of refined copper
741220 Copper; tube or pipe fittings (e.g. couplings, elbows, sleeves) of copper alloys
FITTINGS HS CODES / FLANGES HS CODES NICKEL ALLOY FITTINGS AND FLANGES 7507 Nickel; tubes, pipes and tube or pipe fittings (e.g. couplings, elbows, sleeves)
750720 Nickel; tube and pipe fittings
FITTINGS HS CODES / FLANGES HS CODES ALUMINIUM FITTINGS AND FLANGES 7609 Aluminium; tube or pipe fittings (e.g. couplings, elbows, sleeves)
760900 Aluminium; tube or pipe fittings (e.g. couplings, elbows, sleeves)
GASKETS HS CODES 8484 gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals
848410 gaskets and similar joints; of metal sheeting combined with other material or two or more layers of metal
848490 Gasket sets or assortments of gaskets and similar joints; dissimilar in composition, put up in pouches, envelopes or similar packings
4016
401693 Rubber; vulcanized (other than hard rubber), gaskets, washers and other seals, of non-cellular rubber
STUD BOLTS HS CODES IRON / STEEL STUD BOLTS 7318 Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel
731815 Iron or steel; threaded screws and bolts n.e.c. in item no. 7318.1, whether or not with their nuts or washers
731819 Iron or steel; threaded screws, bolts and nuts n.e.c. in item no. 7318.1
STUD BOLTS HS CODES NON-FERROUS STUD BOLTS 7415 Copper, nails, tacks, drawing pins, staples (not those of heading no. 8305) and the like, of copper or iron or steel with heads of copper; screws bolts, nuts, screws hooks, rivets, cotters, washers
741533 Copper; screws, bolts, and nuts, threaded
761610 Aluminium; nails, tacks, staples (other than those of heading no. 8305), screws, bolts, nuts, screw hooks, rivets, cotters, cotter-pins, washers and similar articles

 

HS CODES SEARCH

American database of HS codes: HTS SEARCH

The HTSA defines the applicable tariff and the nomenclature for statistical tracking for all merchandise imported into the United States; it is based on the international Harmonized System described above. The HTSA system is managed by the US International Trade Commission (Office of Tariff Affairs and Trade Agreements).

European database of HS codes: EUROPEAN CUSTOMS PORTAL