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HS Codes for Piping Products: Complete List

HS Codes for Piping

Shipping Documents e1548872564539Shipping & Exporting Products

HS Code Structure

LevelDigitsExampleDescription
Chapter273Iron and steel
Heading47304Tubes, pipes, seamless
Subheading6730441Stainless steel, cold-drawn
National8-10+Varies by countryCountry-specific tariff rates

Countries extend the 6-digit international code with additional digits for national tariff and statistical purposes.

Why HS Codes Matter

PurposeHow HS Codes Help
Customs clearanceIdentifies products; determines if allowed/restricted
Tariffs and taxesCalculates applicable duties-critical for cost planning
Trade statisticsEnables government and industry analysis
Global consistencyCommon language across 200+ countries
Regulatory controlEnforces health, safety, and environmental regulations

HS Codes in Shipping Documents

Exporters must include the correct HS code for each item on the commercial invoice and packing list. Customs authorities rely on these codes to process shipments-errors cause delays and penalties.

Consequences of Incorrect HS Codes

ConsequenceImpact
Customs delaysInspection, verification, reclassification-supply chain disruption
Additional inspectionsStorage, handling, and inspection fees
Fines and penaltiesVaries by country and severity of error
Goods seizureTotal loss of shipment if fraud suspected
Retroactive tariffsPay correct rate plus interest/penalties
Reputation damageIncreased scrutiny on future shipments

Prevention

MeasureAction
TrainingEnsure shipping document preparers understand HS codes
VerificationCross-check codes using official databases
Expert consultationUse customs brokers for complex classifications

The Harmonized System (HS) is a 6-digit international classification used by over 200 countries to determine tariffs, collect duties, and compile trade statistics. Incorrect HS codes cause customs delays, fines, and shipment seizure. For piping materials, always verify classification carefully — a “pipe fitting” classified as 7307 has different duty rates than 7412 (copper fittings) or 3917 (plastic).

HS Code Lookup Resources

ResourceCoverageURL
FindHS.CodesGlobalfindhs.codes
European CustomsEUtariffnumber.com
HTS Search (USA)United Stateshts.usitc.gov

Common HS Codes for Piping Materials

In the table below, we have collected HS codes for the most commonly traded piping products:

  • 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

We recommend verifying the information presented here against the HS codes lookup portals mentioned earlier, as updates and revisions to the codes can occur frequently.

Generic HS Codes by Piping Product Family

Product CategoryDescriptionHS Code (Generic)
PipesStainless Steel Pipes7304.11
Carbon Steel Pipes7304.19
ValvesBall Valves8481.80
Gate Valves8481.30
FittingsElbow, Tee, Reducers7307.93
Stud BoltsFor Flanges7318.15
GasketsMetal Gaskets8484.10
Non-Metal Gaskets8484.20
FlangesStainless Steel Flanges7307.21
Carbon Steel Flanges7307.29

Specific HS Codes by Piping Product Family

CATEGORYTYPEHS CODEDESCRIPTION
PIPES HS CODESPLASTIC PIPES AND TUBES3917Tubes, pipes and hoses, and fittings thereof (for example, joints, elbows, flanges), of plastics
391721Plastics; tubes, pipes, and hoses thereof, rigid, of polymers of ethylene
391722Plastics; tubes, pipes, and hoses thereof, rigid, of polymers of propylene
391723Plastics; tubes, pipes, and hoses thereof, rigid, of polymers of vinyl chloride
391729Plastics; tubes, pipes, and hoses thereof, rigid, of plastics n.e.c. in heading no. 3917
391731Plastics; tubes, pipes, and hoses thereof, flexible, having a minimum burst pressure of 27.6MPa
391732Plastics; tubes, pipes, and hoses thereof, other than those of item no. 3917.31, not reinforced or otherwise combined with other materials, without fittings
391733Plastics; tubes, pipes, and hoses thereof, other than those of item no. 3917.31, not reinforced or otherwise combined with other materials, with fittings
391739Plastics; tubes, pipes and hoses thereof, n.e.c. in item no. 3917.30
PIPES HS CODESCAST IRON PIPES AND TUBES7303Tubes, pipes, and hollow profiles, of cast iron
730300Cast iron; tubes, pipes, and hollow profiles
PIPES HS CODESSEAMLESS PIPES AND TUBES7304Tubes, pipes, and hollow profiles, seamless, of iron (other than cast iron) or steel
730431Iron or non-alloy steel (excluding cast iron); seamless, cold-drawn, or cold-rolled, tubes, pipes, and hollow profiles of circular cross-section
730439Iron or non-alloy steel (excluding cast iron); seamless, (excluding cold-drawn or cold-rolled), tubes, pipes, and hollow profiles of circular cross-section
730441Steel, stainless; cold-drawn or cold-rolled (cold-reduced), tubes and pipes of circular cross-section
730449Steel, stainless; (excluding cold-drawn or cold-rolled), tubes pipes, and hollow profiles of circular cross-section
730451Steel, alloy (not stainless steel); seamless, cold-drawn or cold-rolled (cold-reduced), tubes, pipes, and hollow profiles of circular cross-section
730459Steel, alloy (not stainless steel); (excluding cold-drawn or cold-rolled), tubes, pipes, and hollow profiles of circular cross-section
730490Iron or steel (excluding cast iron); seamless, tubes, pipes and hollow profiles, seamless, n.e.c. in heading no. 7304
PIPES HS CODESWELDED PIPES AND TUBES7305Iron or steel (excluding cast iron); tubes and pipes (e.g. welded, riveted, or similarly closed), having circular crosssections, the external diameter of which exceeds 406.4mm, not seamless
730531Iron 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)
730539Iron 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)
730590Iron 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 CODESWELDED PIPES AND TUBES7306Iron or steel (excluding cast iron); tubes, pipes, and hollow profiles (not seamless), n.e.c. in chapter 73
730630Iron or non-alloy steel (excluding cast iron); tubes and pipes (not seamless), welded, of circular cross-section, n.e.c. in chapter 73
730640Steel, stainless; tubes, pipes, and hollow profiles, welded, of circular cross-section, n.e.c. in chapter 73
730650Steel, alloy; tubes, pipes, and hollow profiles (other than stainless steel or seamless), welded, of circular cross-section, n.e.c. in chapter 73
730661Iron 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
730669Iron 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)
730690Iron or steel (excluding cast iron); tubes, pipes, and hollow profiles (not seamless), n.e.c. in chapter 73
PIPES HS CODESCOPPER PIPES AND TUBES7411Copper tubes and pipes
741110Copper; tubes and pipes, of refined copper
741121Copper; tubes and pipes, of copper-zinc base alloys (brass)
741122Copper; tubes and pipes, of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel silver)
741129Copper; 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 CODESNICKEL ALLOY PIPES AND TUBES7507Nickel; tubes, pipes, and tube or pipe fittings (e.g. couplings, elbows, sleeves)
750711Nickel; tubes and pipes, not alloyed
750712Nickel; tubes and pipes, of nickel alloys
PIPES HS CODESALUMINIUM PIPES AND TUBES7608Aluminum; tubes and pipes
760810Aluminum; tubes and pipes, not alloyed
760820Aluminum; tubes and pipes, alloys
VALVES HS CODES8481Taps, cocks, valves, and similar appliances for pipes, boiler shells, tanks, vats, or the like, including pressure-reducing valves and thermostatically controlled valves
848110valves; pressure reducing, for pipes, boiler shells, tanks, vats or the like
848120valves; for oleo hydraulic or pneumatic transmissions
848130valves; Check (nonreturn) valves, for pipes, boiler shells, tanks, vats, or the like
848140valves; safety or relief valves, for pipes, boiler shells, tanks, vats or the like
848180Taps, cocks, valves, and similar appliances; for pipes, boiler shells, tanks, vats, or the like, including thermostatically controlled valves
848190Taps, cocks, valves, and similar appliances; parts thereof
FITTINGS HS CODES / FLANGES HS CODESPLASTIC FITTINGS AND FLANGES3917Tubes, pipes and hoses, and fittings thereof (for example, joints, elbows, flanges), of plastics
391732Plastics; tubes, pipes, and hoses thereof, other than those of item no. 3917.31, not reinforced or otherwise combined with other materials, without fittings
391733Plastics; tubes, pipes and hoses thereof, other than those of item no. 3917.31, not reinforced or otherwise combined with other materials, with fittings
391740Plastics; tube, pipe and hose fittings (e.g. joints, elbows, flanges)
392630Plastics; fittings for furniture, coachwork or the like
FITTINGS HS CODES / FLANGES HS CODESIRON / STEEL FITTINGS AND FLANGES7307Tube or pipe fittings (e.g. couplings, elbows, sleeves), of iron or steel
730711Cast iron; cast fittings, of non-malleable cast iron
730719Iron or steel; cast fittings, other than of non-malleable cast iron
730721Steel, stainless; tube or pipe fittings, flanges, of stainless steel
730722Steel, stainless; tube or pipe fittings, threaded elbows, bends and sleeves
730723Steel, stainless; tube or pipe fittings, butt welding fittings
730729Steel, stainless; tube or pipe fittings, n.e.c. in item no. 7307.2
730791Iron or steel; tube or pipe fittings, flanges, other than stainless steel
730792Iron or steel; tube or pipe fittings, threaded elbows, bends and sleeves, other than stainless steel
730793Iron or steel; tube or pipe fittings, butt welding fittings, other than stainless steel
730799Iron or steel; tube or pipe fittings, n.e.c. in item no. 7307.9, other than stainless steel
FITTINGS HS CODES / FLANGES HS CODESCOPPER FITTINGS AND FLANGES7412Copper; tube or pipe fittings (e.g. couplings, elbows, sleeves)
741210Copper; tube or pipe fittings (e.g. couplings, elbows, sleeves) of refined copper
741220Copper; tube or pipe fittings (e.g. couplings, elbows, sleeves) of copper alloys
FITTINGS HS CODES / FLANGES HS CODESNICKEL ALLOY FITTINGS AND FLANGES7507Nickel; tubes, pipes and tube or pipe fittings (e.g. couplings, elbows, sleeves)
750720Nickel; tube and pipe fittings
FITTINGS HS CODES / FLANGES HS CODESALUMINIUM FITTINGS AND FLANGES7609Aluminum; tube or pipe fittings (e.g. couplings, elbows, sleeves)
760900Aluminum; tube or pipe fittings (e.g. couplings, elbows, sleeves)
GASKETS HS CODES8484gaskets 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
848410gaskets and similar joints; of metal sheeting combined with other material or two or more layers of metal
848490Gasket sets or assortments of gaskets and similar joints; dissimilar in composition, put up in pouches, envelopes or similar packings
4016
401693Rubber; vulcanized (other than hard rubber), gaskets, washers and other seals, of non-cellular rubber
STUD BOLTS HS CODESIRON / STEEL STUD BOLTS7318Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers), and similar articles, of iron or steel
731815Iron or steel; threaded screws and bolts n.e.c. in item no. 7318.1, whether or not with their nuts or washers
731819Iron or steel; threaded screws, bolts, and nuts n.e.c. in item no. 7318.1
STUD BOLTS HS CODESNON-FERROUS STUD BOLTS7415Copper, 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
741533Copper; screws, bolts, and nuts, threaded
761610Aluminum; nails, tacks, staples (other than those of heading no. 8305), screws, bolts, nuts, screw hooks, rivets, cotters, cotter-pins, washers, and similar articles

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Previous Comments

Tahlia Jensen

Thanks for having this article, it helps a lot. It’s a well-written blog and it is very informative. Keep on blogging, looking forward to see more of your posts!

Rohit patel

Thanks for having this article.The blog is written in well form with very good information,it helps a lot,Nice!!

Projectmaterials

Thank you for your appreciated comment. Should you need further information on some specific topics, kindly send us an email to [email protected]. To submit an RFQ for piping materials, please visit this page: https://projectmaterials.com/submit-rfq-mto. Best regards, Projectmaterials

roht patel

Such a great blog thank u for sharing useful information about HS Codes for Pipes. This article really Amzing and so much helpful for Me. Keep it up:).

Bane

Tx. Nice summary. But one question. Which Tarrif Number would apply if I send prefabricated Piping Spools to site (e.g. a pipe with an elbow and a attached nozzle). Should I use the Number of the main pipe or is there one for the premanufactured assembly?