Heading 7305

Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel

21 declarable lines

Heading 7305 covers welded or similarly closed iron or steel tubes and pipes with circular cross sections and an external diameter over 406.4 mm. It is split first by use, line pipe for oil or gas pipelines, casing for oil or gas drilling, and other pipes, then by weld method and by iron or nonalloy steel versus alloy steel.

Products in this heading

Large-diameter line pipe for oil or gas pipelines
Longitudinally submerged arc welded steel line pipe
Oil and gas well casing, threaded or coupled
Large-diameter alloy steel line pipe
Longitudinally welded stainless steel pipe over 406.4 mm
Tapered steel pipes and tubes for illuminating articles
Large welded steel pipe for general use

How to choose the right subheading

Confirm the external diameter is over 406.4 mm and the cross section is circular.
Decide whether the pipe is line pipe for oil or gas pipelines, casing for oil or gas drilling, or other pipe.
For line pipe, identify longitudinally submerged arc welded, other longitudinally welded, or other.
For casing, identify iron or nonalloy steel versus alloy steel and whether it is threaded or coupled.
For other welded pipe, identify longitudinally welded versus other, then stainless steel, other alloy steel, or nonalloy steel.

Often confused with

Welded steel tubes and pipes with an external diameter of 406.4 mm or less
Heading 7305 requires an external diameter over 406.4 mm.
Heading 7306
Steel oil or gas line pipe without a welded joint
Pipes formed without a welded joint are classified in heading 7304.
Heading 7304
Pipe fittings such as couplings, elbows and sleeves
Fittings are classified in heading 7307 even when made for large steel pipe.
Heading 7307
Tubes prepared for use in structures
Prepared structural tubes and parts of structures belong in heading 7308.
Heading 7308

Frequently asked questions

What is the HTS code for large oil or gas line pipe?

Longitudinally submerged arc welded line pipe of nonalloy steel with an external diameter over 406.4 mm but not over 609.6 mm is 7305.11.10.30, and the general (MFN) rate is Free. If the external diameter is over 609.6 mm, use 7305.11.10.60, and the general (MFN) rate is Free.

What is the duty on oil and gas well casing?

The general (MFN) rate for threaded or coupled casing of iron or nonalloy steel under 7305.20.20.00 is Free. The general (MFN) rate for other casing of iron or nonalloy steel under 7305.20.40.00 is Free.

How do I classify large welded alloy steel pipe?

For other welded pipe that is longitudinally welded, stainless steel pipe over 406.4 mm is 7305.31.60.10, and the general (MFN) rate is Free. Other alloy steel pipe in that group is 7305.31.60.90, and the general (MFN) rate is Free.

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.