Reference for importers
HS codes for pipe, plate, fittings, flanges and fasteners
Six-digit Harmonized System headings for the products we export, by material. Your country adds its own digits — confirm the full tariff line with your customs broker.
| Material | Plate & sheet | Pipe & tube | Fittings | Flanges | Fasteners |
|---|---|---|---|---|---|
| Nickel alloys (Inconel 600/625/718/825, Hastelloy, Monel) | 7506.20 | 7507.12 | 7507.20 | 7507.20 | 7508.90 |
| Stainless & duplex steel (304, 316L, 904L, 2205, 2507, Incoloy 800) | 7219 (≥ 600 mm wide) / 7220 (narrower) | 7304.41 / 7304.49 (seamless) · 7306.40 (welded) | 7307.23 (butt-welding) · 7307.22 (threaded) · 7307.29 (socket-weld / other) | 7307.21 | 7318.15 (bolts, studs) · 7318.16 (nuts) |
| Carbon steel (A106, A333, A516, S275, S355, IS 2062) | 7208 (≥ 600 mm wide) / 7211 (narrower) | 7304.19 / 7304.39 (seamless) | 7307.93 (butt-welding) · 7307.92 (threaded) · 7307.99 (other) | 7307.91 | 7318.15 · 7318.16 |
| Alloy steel (P11, P22, SA-387) | 7225 (≥ 600 mm wide) / 7226 (narrower) | 7304.51 / 7304.59 (seamless) | 7307.93 · 7307.99 | 7307.91 | 7318.15 · 7318.16 |
HS 2022 nomenclature. An alloy is classified by the metal that predominates by weight. Flat-rolled headings depend on width (600 mm). This table is a guide, not a customs ruling.
HS codes — questions
Is Inconel 825 classified as steel or nickel?
As a nickel alloy (HS chapter 75), because nickel is the largest element by weight. Incoloy 800, where iron predominates, is classified as stainless steel (chapter 72).
What is the HS code for stainless steel flanges?
7307.21 at the six-digit level. National tariff lines add further digits.
What is the HS code for stainless steel buttweld fittings?
7307.23.
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