Large OD Seamless Steel Mechanical Tubing
Cold-finished seamless mechanical tubing from non-alloy steel, exceeding 16 inches OD with thin walls <19 mm for machinery frames. HTS 7304.39.0076 for other large seamless pipes. Precision tolerances for rotating equipment housings.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other than cold-drawn
Hot-finished mechanical tubing uses different subheadings.
If bored and machined for transmission shafts
Finished crankshaft housings become transmission components.
If electric resistance welded
ERW mechanical tubing classifies as welded under 7306.
Not sure which classification is right?
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Import Tips & Compliance
• ASTM A519 mechanical tubing specs required for grade verification
• Tolerance certificates critical for 'cold-finished' classification
• Separate invoices for cut lengths vs full mill runs
Related Products under HTS 7304.39.00.76
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