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.
Import Duty Rates by Country of Origin
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 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.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
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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