Heading 7307
Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel
39 declarable lines
Heading 7307 covers tube or pipe fittings of iron or steel, such as couplings, elbows, sleeves and flanges. It first separates cast fittings from other fittings, then splits stainless steel and other steel fittings by article type and processing.
Products in this heading
- Cast iron threaded pipe coupling
- Ductile iron grooved-end coupling
- Stainless steel threaded coupling (sleeve)
- Stainless steel butt welding elbow
- Steel pipe flange
- Threaded steel elbow
- Steel pipe nipple
- Mechanical joint pipe fitting
How to choose the right subheading
- Material: cast iron, stainless steel, iron or nonalloy steel, or alloy steel other than stainless.
- Construction: cast fitting versus fitting other than cast.
- Article type: flange, threaded elbow, bend, sleeve, butt welding fitting, or other fitting.
- For flanges and butt welding fittings, inside diameter below 360 mm or 360 mm and above where the list makes that split.
- Processing: not machined, not tooled and not otherwise processed after forging or forming versus other processing.
Often confused with
- Heading 7306Welded stainless steel tube
A tube is the pipe product, not a fitting.
- Heading 7318Bolts and nuts used to join flanges
Fasteners join fittings but are classified as fasteners.
- Heading 7308Steel pipe support frame
A structural article made from pipe is not a pipe fitting.
- Heading 7315Chain used for pipe hanging
Chain is classified in the chain heading.
Frequently asked questions
What is the HTS code for a stainless steel threaded coupling?
Stainless steel threaded sleeves (couplings) are classified under 7307.22.10.00, with a general (MFN) rate of Free.
What is the duty on cast iron threaded pipe fittings?
Cast fittings of nonmalleable cast iron for threaded pipe are classified under 7307.11.00.30, with a general (MFN) rate of 4.8%.
How do I classify a grooved-end ductile iron coupling?
A grooved-end ductile iron coupling is classified under 7307.19.30.40, with a general (MFN) rate of 5.6%.
Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.
All lines in heading 7307
- 7307.11.00.30Cast fittings / Of nonmalleable cast iron / For threaded pipe4.8%
- 7307.11.00.45Cast fittings / Of nonmalleable cast iron / For cast-iron soil pipe4.8%
- 7307.11.00.60Cast fittings / Of nonmalleable cast iron / Other4.8%
- 7307.19.30.40Grooved-end fittings (including grooved couplings)5.6%
- 7307.19.30.60Cast fittings / Ductile fittings / Threaded5.6%
- 7307.19.30.70With mechanical, push-on (rubber compression) or flanged joints attached5.6%
- 7307.19.30.85Cast fittings / Ductile fittings / Other5.6%
- 7307.19.90.30Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel / Cast fittings / Unions6.2%
- 7307.19.90.40Grooved-end fittings (including grooved couplings)6.2%
- 7307.19.90.60Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel / Cast fittings / Threaded6.2%
- 7307.19.90.80Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel / Cast fittings / Other6.2%
- 7307.21.10.00Not machined, not tooled and not otherwise processed after forging3.3%
- 7307.21.50.00Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel / Flanges / Other5.6%
- 7307.22.10.00Threaded elbows, bends and sleeves / Sleeves (couplings)Free
- 7307.22.50.00Threaded elbows, bends and sleeves / Other6.2%
- 7307.23.00.30Not machined, not tooled and not otherwise processed after forming5%
- 7307.23.00.90Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel / Butt welding fittings / Other5%
- 7307.29.00.30Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel / Nipples5%
- 7307.29.00.90Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel / Other5%
- 7307.91.10.00Not machined, not tooled and not otherwise processed after forging / Of iron or nonalloy steel3.3%
- 7307.91.30.00Of alloy steel (except stainless steel)3.2%
- 7307.91.50.10With an inside diameter of less than 360 mm / Of iron or nonalloy steel5.5%
- 7307.91.50.30Of alloy steel (except stainless steel)5.5%
- 7307.91.50.50With an inside diameter of 360 mm or more / Of iron or nonalloy steel5.5%
- 7307.91.50.70Of alloy steel (except stainless steel)5.5%
- 7307.92.30.10Threaded elbows, bends and sleeves / Sleeves (couplings) / Of iron or nonalloy steelFree
- 7307.92.30.30Of alloy steel (except stainless steel)Free
- 7307.92.90.00Threaded elbows, bends and sleeves / Other6.2%
- 7307.93.30.10Not machined, not tooled and not otherwise processed after forging6.2%
- 7307.93.30.40With an inside diameter of less than 360 mm / Of iron or nonalloy steel / Other6.2%
- 7307.93.60.00Of alloy steel (except stainless steel)5.5%
- 7307.93.90.10Not machined, not tooled and not otherwise processed after forging4.3%
- 7307.93.90.40With an inside diameter of 360 mm or more / Of iron or nonalloy steel / Other4.3%
- 7307.93.90.60Of alloy steel (except stainless steel)4.3%
- 7307.99.10.00Not machined, not tooled and not otherwise processed after forging / Of iron or nonalloy steel3.7%
- 7307.99.30.00Of alloy steel (except stainless steel)3.2%
- 7307.99.50.15Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel / Of iron or nonalloy steel / Nipples4.3%
- 7307.99.50.45Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel / Of iron or nonalloy steel / Other4.3%
- 7307.99.50.60Of alloy steel (except stainless steel)4.3%