HS Code for Steel casing

Steel casing is classified under HS code 7306.29 because it falls within the category of other welded tubes and pipes made of iron or steel. Specifically, this subheading is reserved for casing and tubing of a kind used in drilling for oil or gas, which are not made of stainless steel and are not seamless. The classification is determined by two primary factors: the manufacturing process and the end-use application. Unlike seamless pipes, which are extruded, products under 7306.29 are typically produced by forming flat-rolled steel into a cylindrical shape and welding the longitudinal seam, often using Electric Resistance Welding (ERW). The 'n.e.c.' (not elsewhere classified) designation in this chapter ensures that welded casing that does not meet the specific criteria for larger diameters (over 406.4 mm) or specific alloy compositions found in other subheadings is captured here. This classification is vital for the energy sector, as it distinguishes standard welded casing from more specialized or larger-scale piping systems.

Products Included

• Welded steel oil well casing
• ERW (Electric Resistance Welded) casing pipes
• Gas extraction tubing (welded, non-stainless)
• Threaded and coupled steel casing
• Water well casing made of welded carbon steel

Common Misclassification

Steel casing is frequently misclassified under HS code 7304.29. The critical distinction is that 7304.29 is strictly for seamless casing and tubing. Importers often confuse the two if they do not verify the manufacturing method. Another common error involves HS code 7305.20, which is reserved for welded casing with an external diameter exceeding 406.4 mm. If the pipe is welded but has a smaller diameter, it must stay in 7306.29. Additionally, if the casing is made of stainless steel, it should be classified under 7306.21.

FAQ

What is the HS code for steel casing?

The HS code for welded steel casing (other than stainless or seamless) used in oil and gas drilling is 7306.29.

How do I distinguish between HS 7304 and 7306 for casing?

The distinction is based on the seam. HS 7304 is for seamless pipes, while HS 7306 is for pipes with a welded or riveted seam.