Thin-Wall Seamless Steel Structural Pipes
Seamless pipes of nonalloy steel with wall thickness less than 4 mm for lightweight structural frameworks in construction. HTS 7304.90.50.00 applies to these thin-walled seamless hollow profiles.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If fabricated into structures or sections
Assembled structures from tubes classify under 7308.
If wall thickness ≥4 mm
Standard structural pipes typically thicker, separate subheading.
If other welded hollow sections
Welded structural tubing common under 7306.
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Import Tips & Compliance
• Provide engineering specs showing structural use without heavy load ratings
• Ensure round profile; square/rectangular may classify differently as profiles
• Avoid pre-galvanized finish, as coated tubes risk 7306.60 classification
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