Cold-Rolled 4130 Chrome-Moly Precision Tube
Seamless cold-rolled tube from 4130 chromium-molybdenum alloy steel, circular cross-section for aircraft structural components. Classified in HTS 7304.51.50 as 'other' cold-reduced seamless alloy steel tubes, excluding those for boilers or pressure vessels. High strength-to-weight ratio suits aerospace applications.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If hot-finished or suitable for boilers
Hot-rolled seamless tubes of alloy steel go under 7304.39, not cold-formed.
If other alloy steel but welded construction
Welded pipes/tubes of alloy steel classify in 7306 series.
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Import Tips & Compliance
• Obtain chemical analysis certificate proving chrome-moly alloy (e.g
• 0.8-1.1% Cr, 0.15-0.25% Mo)
• Avoid misclassification as hot-finished; cold-rolled surface finish is key evidence
• For sets with fittings, principal article rules may apply Chapter 73 but watch for set provisions
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