Duplex Stainless Steel Welded Pipe 4-inch
High-strength duplex stainless (e.g., 2205) welded pipe, 4-inch with wall thickness ≥1.65 mm for offshore platforms. Still HTS 7306.40.50 as all stainless steel welded circular tubes qualify.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If line pipe for oil/gas, welded
Pipes meeting API 5L for pipelines have specific headings.
If classified as non-stainless alloy
Some duplex grades argued as alloy steel outside stainless definition.
If seamless duplex pipe
Duplex seamless versions remain in cold-drawn seamless category.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Duplex requires PREN value documentation (pitting resistance equivalent number)
• Confirm welding consumables match base metal to prevent segregation issues
• Oil/gas importers often misclassify under API 5L pipe specifications
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