HS Code for Cold-drawn steel pipes

HS code 7304.31 is used for seamless, cold-drawn, or cold-rolled tubes and pipes made of iron or non-alloy steel. This classification is found in Chapter 73 (Articles of iron or steel) and Heading 7304 (Seamless tubes, pipes, and hollow profiles). The "non-alloy" designation refers to steel that does not meet the chemical composition thresholds for alloy steel defined in the Chapter 72 notes; it is typically referred to as carbon steel. The "cold-drawn" or "cold-rolled" specification indicates that the pipe has been processed after the initial hot-forming to achieve specific dimensions and surface characteristics. This process, often referred to as "cold finishing," is common for precision tubes used in mechanical applications, automotive parts, and hydraulic systems. The product must have a circular cross-section to fit this specific subheading. If the pipe were hot-finished rather than cold-drawn, it would be classified under 7304.39. If the pipe were welded rather than seamless, it would fall under Heading 7305 (for large diameters) or 7306 (for smaller diameters). Accurate classification depends on verifying the absence of a weld seam and confirming the steel's chemical composition through technical documentation. The cold-drawing process provides a superior surface finish and tighter dimensional tolerances compared to hot-rolling, which is why the HS system distinguishes between these two manufacturing methods.

Products Included

• Seamless cold-drawn carbon steel pipes
• Cold-finished non-alloy mechanical tubing
• Seamless cold-drawn boiler tubes (non-alloy)
• Precision cold-drawn steel pipes for hydraulic systems
• Cold-rolled seamless non-alloy circular tubes

Common Misclassification

A common error is using 7304.39, which is for hot-finished seamless non-alloy pipes. Another mistake is classifying alloy steel pipes under this code; alloy steel (non-stainless) belongs in 7304.51. Furthermore, any pipe with a longitudinal or spiral weld must be classified under 7305 or 7306, as 7304 is strictly for seamless products.

FAQ

What is the HS code for cold-drawn steel pipes?

The HS code for seamless, cold-drawn or cold-rolled iron or non-alloy steel pipes of circular cross-section is 7304.31.

Can welded pipes be classified under HS 7304.31?

No, HS 7304 is exclusively for seamless pipes. Welded pipes of non-alloy steel are typically classified under 7306.30.