Import duty on grooved-end fittings from Thailand

Duty on a $10,000 entry of HTS 7307.19.30.40

An estimate for planning only: U.S. Customs and Border Protection (CBP) determines the final duty on your entry. Priced against tariff measures version 2026-10-06.

How much is the import duty on grooved-end fittings from Thailand?

A shipment of grooved-end fittings classified under HTS 7307.19.30 and made in Thailand currently pays a total of 55.60% in U.S. import duty. That total is built from two lines, not one: the Column 1 general rate of 5.6%, plus a Section 232 metals duty of 50.00% charged under Chapter 99. Customers who look up only the base rate in the tariff schedule and stop there are under-budgeting this shipment by 50.00%.

The schedule also lists a special (preferential) rate for this subheading — Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG). A preference applies only if the goods meet the named program's rules of origin and the claim is made on the entry, and it never waives a Chapter 99 additional duty. Whether your goods qualify is a question for a licensed customs broker.

The duty stack, line by line

U.S. duty on this code is assembled from separate legal instruments, each with its own authority. Here is what each line on the entry is:

The base line is HTS 7307.19.30.40 itself at 5.6%, the ordinary most-favored-nation rate that applies to every origin with normal trade relations with the United States.

HTS 9903.82.02 adds 50.00% under Section 232, the national-security tariff on aluminum, steel and copper articles — it follows the article rather than the country, so changing origin does not remove it (engine label: "Section 232 metals Annex I-A (50%)").

Worked example: a $10,000 shipment

Take one ocean shipment of grooved-end fittings with an entered value of $10,000 — the customs value of the goods, before freight and insurance. At 55.60%, the duty is $5,560.00. Of that, $560.00 is the Column 1 duty and $5,000.00 is Chapter 99 additional duty. On top of the duty, the entry attracts a merchandise processing fee of $34.64 and, because it arrives by vessel, a harbor maintenance fee of $12.50. Duty and fees together come to $5,607.14, and the engine puts the landed cost of the goods at $15,607.14.

These are ad valorem rates, so a $100,000 entry of the same goods carries about $55,600 in duty, though MPF is capped per entry. Run your own value, entry date and HTS code through the import duty calculator for the same calculation against the same engine.

What changed, and when

The rate here has been stable across the period we can price: an entry dated 15 October 2025 pays the same 55.60% that applies today. Stability is not a promise — Chapter 99 lists are amended by notice, sometimes with days of warning — but this subheading has not been a moving target from Thailand.

An entry dated 15 May 2026 prices at 55.60%, the same total as today. The Section 122 balance-of-payments surcharge in force over that window (24 February to 23 July 2026, since expired) did not attach to this code.

MPF, HMF and what else lands on the entry

Duty is not the whole bill to Customs. The merchandise processing fee is ad valorem with a statutory floor and ceiling per entry — $34.64 on this $10,000 example. The harbor maintenance fee is charged on vessel arrivals only, $12.50 here; the same shipment flown in would pay no HMF.

Not in any of these figures: antidumping and countervailing duties, excise taxes, quota charges, bond costs, and the freight and brokerage that make up the rest of your landed cost. AD/CVD is worth checking before you commit to a supplier — it is assessed on the producer and exporter, not just on the HTS code, and it can dwarf the tariff.

U.S. imports of 7307.19.30 from Thailand

Between March and July 2026 the U.S. imported $175 million under HTS 7307.19.30 from the 55 origins in this dataset; $15 million of it — 8.4% — came from Thailand, making Thailand a mid-sized supplier on this subheading. The largest were China (43.6%), India (22.6%), Mexico (10.3%), Thailand (8.4%) and Poland (6.5%).

Census also reports duty actually collected: entries of HTS 7307.19.30.40 from Thailand paid an average effective duty of 28.39% of value over those months. That is below the 55.60% priced here, which usually means part of that volume entered before the current measures took effect, or entered under a preference, an exclusion or a different 10-digit line. Treat it as a sanity check on your own numbers, not a forecast of your entry.

If you are moving this cargo rather than just pricing it, our Thailand to USA shipping route page covers transit times, ports and documentation on the lane itself, and our Steel Logistics guide covers packing, classification and handling for this cargo type.

Planning around this number

Classification drives this: the page prices HTS 7307.19.30.40, the largest 10-digit line under 7307.19.30 for Thailand by import value, and a neighboring line in the same subheading can carry different Chapter 99 exposure. Entry date matters as much as origin — the gap between the dates above is a change in law, not in your goods.

Airlift USA does not hold a U.S. customs broker license — customs entries are handled through our licensed broker network, and the broker of record makes the classification and origin calls. These figures are estimates for planning, produced by the same engine behind our import duty calculator; U.S. Customs and Border Protection determines the final duty on your entry.

How the duty on this shipment changed by entry date

What HTS 7307.19.30.40 covers

Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel > Cast fittings > Other > Ductile fittings > Grooved-end fittings (including grooved couplings)

Rates can differ from one 10-digit line to the next, so confirm your classification with a licensed customs broker before you rely on this figure. Other 10-digit lines under 7307.19.30: 7307.19.30.40, 7307.19.30.60, 7307.19.30.85, 7307.19.30.70.

Common questions about duty on HTS 7307.19.30 from Thailand