HS Code for Welded line pipe

Welded line pipe with an external diameter exceeding 406.4 mm is classified under HS code 7305.12. Chapter 73 covers articles of iron or steel, and heading 7305 is specifically for large-diameter pipes (over 406.4 mm) that are not seamless. Within this heading, the code 7305.12 is reserved for line pipe used for oil or gas pipelines that are longitudinally welded. Crucially, this subheading excludes submerged arc welded pipes (which fall under 7305.11). The classification is determined by three factors: the material (iron or steel), the external diameter (must be > 406.4 mm), and the welding technique (longitudinal, but not submerged arc). These pipes are essential for midstream energy infrastructure and are subject to rigorous testing standards like API 5L. The longitudinal weld is typically achieved through Electric Resistance Welding (ERW) or High-Frequency Induction (HFI) welding.

Products Included

• ERW line pipe for natural gas transmission
• Longitudinally welded oil pipeline sections
• Large diameter steel pipes (>16 inches) for energy transport
• HFI welded line pipes for offshore pipelines
• API 5L grade welded steel pipes

Common Misclassification

This code is often confused with 7304, which is for seamless pipes. It is also frequently mixed up with 7305.11, which is for submerged arc welded (SAW) pipes. If the pipe diameter is 406.4 mm or less, it must be classified under heading 7306, regardless of the welding method or intended use in oil and gas lines.

FAQ

What is the HS code for welded line pipe?

For longitudinally welded line pipe with a diameter exceeding 406.4 mm, the HS code is 7305.12.

What if the diameter is smaller?

If the external diameter is 406.4 mm or less, the pipe is classified under HS code 7306.19 (for iron or steel line pipe).