HS Code for Stainless steel casing

The classification of stainless steel casing under HS code 7306.21 is determined by its material composition, manufacturing method, and specific industrial application. As an article of iron or steel, it falls within Chapter 73. Specifically, heading 7306 covers tubes, pipes, and hollow profiles that are welded, riveted, or similarly closed, distinguishing them from the seamless varieties found in heading 7304. The subheading 7306.21 is reserved for casing and tubing of a kind used in drilling for oil or gas, made specifically from stainless steel. This classification requires the product to meet the metallurgical definition of stainless steel, which typically involves a minimum chromium content of 10.5% by weight. The welded nature of the pipe is a primary identifier; these pipes are formed by rolling steel strips and welding the longitudinal or spiral seam. Because these products are engineered to withstand the corrosive environments and high pressures associated with oil and gas extraction, their specific functional design dictates their placement in this category rather than under general-purpose welded pipes. According to the General Rules of Interpretation (GRI) 1 and 6, the specific use as oil-well casing takes precedence over more general pipe classifications.

Products Included

• Welded stainless steel oil-well casing
• Welded stainless steel tubing for gas extraction
• Corrosion-resistant welded pipes for offshore drilling
• Stainless steel drill pipes with longitudinal seams

Common Misclassification

This product is frequently confused with HS code 7304.22, which covers seamless stainless steel casing. The primary difference lies in the manufacturing process; 7304.22 is for pipes without a weld seam. Additionally, it may be misclassified under 7306.29 if the material is not stainless steel (e.g., other alloy steel or carbon steel). General-purpose welded stainless pipes fall under 7306.40, but if they are specifically designed for oil and gas drilling, 7306.21 must be used.

FAQ

What is the HS code for Stainless steel casing?

The HS code for welded stainless steel casing used in oil and gas drilling is 7306.21.

Does this code include seamless casing?

No, seamless stainless steel casing is classified under heading 7304, specifically 7304.22.