Cold-Drawn Seamless Steel Structural Hollow Section
Cold-drawn seamless circular hollow section of nonalloy steel, 3-inch OD x 0.188-inch wall, for structural frameworks in machinery. HTS 7304.31.60.50 covers this as other cold-rolled seamless tube of circular cross section. Provides strength without welding seams.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded square/rectangular HSS
Welded structural shapes other than circular go to 7306.60.
If machined with external/internal threading
Threaded at ends for assembly becomes 7308 structures/parts.
If hot-formed structural tube
Hot-finished equivalents classify under 7304.39 other hot-rolled.
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Import Tips & Compliance
• Distinguish from HSS (hollow structural sections) which are typically welded under 7306.60
• Declare as 'mechanical tubing' if structural end-use unclear at import
• Ensure cross-section remains circular; oval shapes may require different classification
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