HS Code for Seamless steel casing

Seamless steel casing is classified under HS code 7304.29. This product falls under the category of Oil Country Tubular Goods (OCTG). The classification is specific to seamless tubes and pipes used in drilling for oil or gas. Casing is a large-diameter pipe that is assembled and inserted into a recently drilled section of a borehole and typically cemented into place to protect and support the wellstream. The HS system distinguishes these pipes from general-purpose pipes because of their specialized application and the rigorous standards (such as API 5CT) they must meet. Subheading 7304.29 covers "other" casing and tubing, meaning it excludes drill pipe (which has its own subheading) and is made of iron or steel (excluding stainless steel). The classification is determined by the pipe's function as a structural retainer for well walls during or after drilling operations.

Products Included

• Seamless OCTG casing pipes
• Seamless production tubing for oil wells
• API 5CT compliant seamless casing
• Intermediate and surface casing strings
• Seamless liners for oil and gas boreholes

Common Misclassification

Seamless casing is frequently misclassified as line pipe (7304.19). While both are used in the oil and gas industry, line pipe is intended for the transport of fluids over distances, whereas casing is used within the wellbore itself. Another common error is confusing seamless casing with welded casing (7306.29). If the pipe has any seam from welding, it must be moved to heading 7306. Additionally, drill pipe (7304.23) is often confused with casing; however, drill pipe is used to transmit torque and circulate drilling fluid, whereas casing is a static structural component.

FAQ

What is the HS code for seamless steel casing?

The HS code for seamless steel casing used in oil or gas drilling is 7304.29.

What is the difference between casing and tubing in HS classification?

In the context of HS code 7304.29, both casing and tubing are grouped together. Casing is used to line the borehole, while tubing is placed inside the casing to transport the oil or gas to the surface. Both are classified under 7304.29 if they are seamless and made of carbon or alloy steel.